2023最新大学英语四级模拟试题（一）Part ⅠWriting (30 minutes)Directions: For this part, you are allowed 30 minutes to write a short essay entitled The Popularity of Getting Certificates on Campus. You should write at least 150 words following the outline given below.1.大学校园内多种证书旳报考十分火热2.大学生考证旳利弊3.考证面前，我旳选择The Popularity of Getting Certificates on CampusPart ⅡReading Comprehension (Skimming and Scanning) (15 minutes) Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1.For questions 1-7, choose the best answer from the four choices marked A), B), C) and D). For questions 8-10, complete the sentences with the information given in the passage.Main Energies for the BodyA balanced diet is one that provides an adequate intake of energy and nutrients for maintenance of the body and therefore good health. A diet can easily be adequate for normal bodily functioning, yet may not be a balanced diet.CarbohydratesCarbohydrates are a rapid source of energy, they are the body's fuel. The bulk of a balanced diet should be made from carbohydrates. If eaten in an excess of the dietary requirements carbohydrates are easily stored as fats in the cells, although carbohydrate is the first source of energy in the body. An average adult requires about 12,000kJ of energy a day, most of this is supplied by the respiration of carbohydrates in the cells.Carbohydrates are used principally as a respiratory substrates, i.e. to be oxidized to release energy for active transport, macromolecule synthesis, cell division and muscle contraction. Carbohydrates are digested in the duodenum and ileum and absorbed as glucose into cells. Sources of carbohydrates such as starch are rice, potatoes, wheat and other cereals. Sugars are also carbohydrates, sources of sugars are refined sugar - sucrose, which is a food sweetener and preservative and fruit sugars - fructose. If the diet lacks carbohydrate stores of fat are mobilized and used as an energy source.ProteinsProtein is not a direct source of energy in the body, it is used primarily for growth and repair of body tissues while remaining an energy source as a last resort. Proteins fulfill a wide variety of roles in the body. They are broken down in the stomach and intestines to amino acids which are then absorbed. The body can only form 8 amino acids to build proteins from, the diet must provide Essential Amino Acids (EAAs) which are synthesized into proteins which can be structural, i.e. collagen in bone, keratin in hair, myosin and actinin muscle; metabolic enzymes, hemoglobin, protective antibodies and communicative hormones.Sources of protein include meat, fish, eggs and pulses. The diet needs to provide 8 EAAs as the body is unable to synthesis proteins without these molecules. 2 other amino acids are synthesized from EAAs so if the diet lacks the original EAAs these other two will not be present either. Phenylalanine is converted to tyrosine and methionine is converted to cysteine. Cells draw upon a pool of amino acids for protein synthesis which either come from dietary protein digested and absorbed in the gut and the breakdown of body protein such as muscle. However, unlike fats and carbohydrates there is no store of amino acids for cells to draw on, any amino acid in excess of immediate bodily requirements is broken down into urea and excreted. It is therefore important to maintain the dietary intake of protein everyday. If the body lacks protein, muscle wasting occurs as muscle is broken down.If protein is lacked in a diet a person develops kwashiorkor which is caused when high levels of carbohydrates are eaten to overcome the lack of protein in the diet. One symptom of kwashiorkor is the abnormal collection of fluid around the abdomen due to the lack of protein in the blood. The body cannot retain water by osmosis and fluid accumulates in tissues causing them to become waterlogged.Vitamin CategoriesVitamins cannot be synthesized by the body so must be supplied by diet. Vitamins have no common structure or function but are essential in small amounts for the body to be able to utilize other dietary components efficiently.Vitamins fall into two categories, fat soluble vitamins such as vitamin A, D, E and K which are ingested with fatty foods and water soluble vitamins such as the B group vitamins and vitamin C. Vitamins are known as micronutrients because only small quantities are required for a healthy diet, in fact fat soluble vitamins can be toxic in high concentrations, for example the body stores vitamin A, or retinol, in the liver as it is toxic if kept in high concentrations in the blood stream, a dose of more than 3300mg of vitamin A can be considered toxic. Water soluble vitamins such as vitamin C and B groups vitamins can be excreted in the urine if in excess in the diet.Vitamins AVitamin A is essential to the proper functioning of the retina in the eye and the epithelial tissues. A lack of vitamin A results in dry, rough skin, inflammation of the eyes, a drying or scarring of the cornea - xerophthalmia, which occurs when the secretion of lubricating tears is stopped, the eyelids become swollen and sticky with pus. Mucous surfaces of the eye may become eroded allowing infection to set in, leading to ulceration and destruction of the cornea. Night blindness - an inability to see in dim light can also occur. Rod cells in the retina of the eye detect light of low intensity, they convert vitamin A into a pigment, rhodopsin, which is bleached when light enters the eye. Rod cellsresynthesis rhodopsin, but if there is a deficiency of the vitamin, rod cells can no longer function and the result is night blindness. Epithelial cells use retinol to make retinoic acid, an intracellular messenger used in cell differentiation and growth. Without retinoic acid epithelial cells are not maintained properly and the body becomes susceptible to infections, particularly measles and infections of the respiratory system and gut.Xenophthalmia is common among children who's diets consist of mainly cereals with little meat or fresh vegetables, this is common in Indonesia, Bangladesh, India and the Philippines.Vitamins DVitamin D, or calciferol, is another fat soluble steroid vitamin which functions to stimulate calcium uptake from the gut and its deposition in bone. vitamin D acts as a hormone when converted by enzymes in the gut and liver into an active form of "active vitamin D", which stimulates epithelial cells in the intestine to absorb calcium. vitamin D is therefore essential in growing children's diets to enable the growth of strong bones. Without adequate amounts of vitamin D children can develop rickets, which is the deformation of the legs caused when they lack calcium to strengthen the bones. In adults a lack of vitamin D in the diet can lead to osteomalacia, a progressive softening of the bones which can make them highly susceptible to fracture.Vitamin D is made by the body when exposed to sunlight and is stored in the muscles, however, if the skin is rarely exposed to the sunlight or is dark little vitamin D is produced. Foods such as eggs and oily fish are all rich in vitamin D.Vitamins KVitamin K, phylloquinone, is found in dark green leafy vegetables such as spinach and kale. It is a fat soluble vitamin which is involved in the clotting process of blood. In the intestines bacteria synthesize a number of important clotting factors which need vitamin K. Without vitamin K cuts can fail to heal and internal bleeding can occur.Vitamins CVitamin C is a water soluble vitamin, known chemically as ascorbic acid. It is found in citrus fruits such as oranges and lemons, and also in potatoes and tomatoes. The main function of vitamin C is the formation of connective tissues such as collagen. It is also known to be an antioxidant which helps to remove toxins and aids the immune system. A lack of vitamin C leads to Scurvy, a condition experienced by sailors on long journeys when they did not have fruit in their diets. Scurvy causes painful, bleeding gums. As vitamin C is water soluble, it is not toxic in high doses as it can be excreted in the urine, very high doses can however cause diarrhea.Vitamins BB group vitamins have a wide range of roles acting as co-enzymes in metabolic pathways. They are found in most plant and animal tissues involved in metabolism,therefore foods such as liver, yeast and dairy products are all rich in B group vitamins. Deficiency of B group vitamins include dermatitis, fatigue and malformation of red blood cells.1. An adult needs about 12,000kJ of energy a day from ________.A. the cellB. the respiring process of carbohydratesC. fats in the cellD. a balanced diet2. Carbohydrates are ultimately absorbed into cells in the process of _______.A. digestionB. respirationC. oxidizationD. mobilization3. The Essential Amino Acids which build part of proteins can be obtained from______.A. stomachB. body tissuesC. the bodyD. the diet4. The ultimate cause of kwashiorkor is lack of ________.A. proteinB. carbohydratesC. vitaminsD. diet5. Vitamins are called “micronutrients” in that _________.A. excessive fat soluble vitamins can be excreted in the urineB. the body only requires small amount of vitaminsC. a dose of 3300mg of vitamins can be considered toxicD. the high concentrations of water soluble vitamins are toxic6. Night blindness is a disease normally caused by lack of __________.A. fat soluble vitaminsB. water soluble vitaminsC. vitamin AD. innate disability7. The main function of vitamin D is to prevent adults from ________.A. the growth of strong bonesB. fractureC. a progressive softening of the bonesD. calcium uptake from the gut8. Although the human body produces vitamin D normally, it fails to do so if there is not enough ______________.9. The reason why vitamin C is seen as an antioxidant is that it drives__________ out of the body.10. If you are in lack of B group vitamins, you should turn to _______________. Part III Listening Comprehension (35 minutes)Section ADirections: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choicesmarked A), B), C) and D), and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.11. A) He thinks he’s very o rganized.B) He doesn’t want to join the display.C) He doesn’t think he should lead the study group.D) He knows someone who can lead the study group.12. A) He doesn’t know where his brother keeps his computer.B) The woman should buy a used computer.C) He doesn’t know how much computers cost.D) His brother paid too much for the computer.13. A) It’s been to warm to wear the jacket.B) The jacket is too big for him.C) He doesn’t like cold weather.D) He didn’t buy the jacket until cooler weather arrived.14. A) He started the semester in a bad mood.B) He’s not usually bad-tempered.C) He has few responsibilities.D) He doesn’t like the man.15. A) He forgot to cancel the reservation.B) They can go to the restaurant after the woman has finished working.C) He has to work late tonight.D) They don’t have a reservation at the restaurant.16. A) Use bleach on his socks.B) Buy new white socks.C) Wash his red T-shirt again.D) Throw away his pink socks.17. A) He isn’t satisfied with his progress.B) He wants to move up more quickly than he’s presently doing.C) He has advance quickly enough in his career.D) He feels frustrated as he tries to move up the ladder.18. A) Try on a smaller sweater.B) Look for another style at a different store.C) Give the sweater away as a gift.D) Exchange the sweater for a bigger one.Questions 19 to 22 are based on the conversation you have just heard.19. A) She's unable to attend the study session.B) She has seen a doctor recently.C) She's concerned about medical care.D) She mentions the need for some medical tests.20. A) To improve the study skills of university students.B) To suggest changes in the student government.C) To give people the opportunity to speak with a politician.D) To discuss graduation requirements for political science majors.21. A) Graduate school application procedures.B) Funding for university education.C) Winning the confidence of voters.D) Preparing for an important test.22. A) Tell her what to study for the history test.B) Write a favorable letter of recommendation.C) Advise her about how to run an election campaign.D) Suggest a topic for a research paper.Questions 23 to 25 are based on the conversation you have just heard.23. A) Boston schools.B) Frontier life.C) Teaching requirements.D) Immigration patterns.24. A) She was a famous author.B) Her family later became famous landowners.C) She exemplifies the immigrant spirit.D) She invented some labor-saving farm equipment.25. A) To the library.B) To the movies.C) To a bookstore.D) To a travel bureau.Section BDirections: In this section, you will hear 3 short passages. At the end of each passage, you will hear some question. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A),B),C),and D). Then mark the corresponding letter on the Answer Sheet with a single line through the center.Passage OneQuestions 26 to 29 are based on the passage you have just heard.26. A) They were drawing pictures. B) They were watching TV.C) They were making a telephone call. D) They were tidying up the drawing room.27. A) They locked the couple up in the drawing room.B) They seriously injured the owners of the house.C) They smashed the TV set and the telephone.D) They took away sixteen valuable paintings.28. A) He accused them of the theft.B) He raised the rents.C) He refused to prolong their land lease.D) He forced them to abandon their traditions.29. A) They wanted to protect the farmers’ interests.B) They wanted to extend the reservation area for birds.C) They wanted to steal his valuable paintings.D) They wanted to drive him away from the island.Passage TwoQuestions 30 to 32 are based on the passage you have just heard.30. A) Through food. B) Through air.C) Through insects. D) Through body fluids.31. A) They ran a high fever. B) They died from excessive bleeding.C) Their nervous system was damaged. D) They suffered from heart-attack.32. A) To see what happened to the survivors of the outbreak.B) To study animals that can also get infected with the disease.C) To find out where the virus originates.D) To look for the plants that could cure the disease.Passage ThreeQuestions 33 to 35 are based on the passage you have just heard.33. A) To determine whether the Earth’s temperature is going up.B) To study the behavior of some sea animals.C) To measure the depths of the ocean.D) To measure the movement of waves in the ocean.34. A) They were frightened and distressed.B) They swam away when the speaker was turned on.C) They swam closer to “examine” the speaker when it was turned off.D) They didn’t seem to be frightened and kept swimming near the speaker.35. A) To attract more sea animals to the testing site.B) To drive dangerous sea animals away from the testing site.C) To help trace the sea animals being tested.D) To determine how sea animals communicate with each other.Section CDirections: In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks numbered from 36 to 43 with the exact words you have heard. For blanks numbered from 44 to 46 you are required to fill in the missing information. For these blanks, you can either use the exact words you have just heard or write down the main points in your own words. Finally, when the passage is read for the third time, you should check what you have written.Part IV Reading Comprehension (Reading in Depth) (25 minutes)Section ADirections: In this section, there is a passage with ten blanks. You are required to select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.Questions 47 to 56 are based on the following passage.Dreams are a way for the subconscious to communicate with the __47__ mind. Dreaming of something you’re worried about, researchers say, is the brain’s way of helping you rehearse for a disaster in case it occurs. Dreaming of a challenge, like giving a presentation at work or playing sports, can enhance your __48__. And cognitive neuroscientists have discovered that dreams and the rapid eye movement (REM) that happens while you’re dreaming are __49__ to our ability to learn and remember. Dreaming is a “mood regulatory system,” says Rosalind Cartwright, PhD, chairman of the psychology __50__ at Rush University Medical Center in Chicago. She’s found that dreams help people work through the day’s emotional quandaries. “It’s like having a built-in therapist,” says Cartwright. While we sleep, dreams __51__ new emotional experience to old memories, creating plaid-like patterns of old images laid on top of new ones. As she puts it, “You may wake up and think, What was Uncle Harry doing in my dream? I haven’t seen him for 50years. But the old and new images are __52__ related.” It’s the job of the conscious mind to figure out the relationship. In fact, dream emotions can help real therapists treat patients __53__ traumatic (创伤旳) life events. In a new study of 30 recently __54__ adults, Cartwright tracked their dreams over a five-month period, measuring their feelings toward their ex-spouses. She discovered that those who were angriest at the spouse while dreaming had the best chance of successfully coping with divorce. “If their dreams were bland,” Cartwright says, “they hadn’t started to work through their emotions and __55__ with the divorce.” For therapists, this finding will help __56__ whether divorced men or women need counseling or have already dreamed their troubles away.A. dealB. physicallyC. wakeD. performanceE. makingF. undergoingG. experienceH. divorcedI. determineJ. compareK. departmentL. consciousM. presentationN. linkedO. emotionallySection BDirections: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.Passage OneQuestions 57 to 61 are based on the following passage.A few years ago a young mother watched her husband diaper (给…换尿布) their firstborn son. “You do not have to be unhappy about it,” she protested. “You can talk to him and smile a little.” The father, who happened to be a psychologist, answered firmly, “He has nothing to say to me, and I have nothing to say to him.”Psychologist now know how wrong that father was. From the moment of birth, a baby has a great deal to say to his parents, and they to him. But a decade or so ago, these experts were describing the newborn as a primitive creature who reacted only by reflex, a helpless victim of its environment without capacity to influence it. And mothers acceptedthe truth. Most thought (and some still do) that a new infant could see only blurry (模糊旳) shadows, that his other senses were undeveloped, and that all he required was nourishment, clean diapers, and a warm bassinet.Today university laboratories across the country are studying newborns in their first month of life. As a result, psychologists now describe the new baby as perceptive, with remarkable learning abilities and an even more remarkable capacity to shape his or her environment including the attitudes and actions of his parents. Some researchers believe that the neonatal period may even be the most significant four weeks in an entire lifetime.Far from being helpless, the newborn knows what he likes and rejects what he doesn’t. He shut out unpleasant sensations by closing his eyes or averting his face. He is a glutton for novelty. He prefers animate things over inanimate and likes people more than anything.When a more nine minutes out, an infant prefers a human face to a head-shaped outline. He makes the choice despite the fact that, with delivery room attendants masked and gowned, he has never seen a human face before. By the time he’s twelve hours old, his entire body moves in precise synchrony (同步发生) to the sound of a human voice, as if he were dancing. A non-human sound, such as a tapping noise, brings no such response.57. The author points out that the father diapering his first-born son was wrong because________.A) he believed the baby was not able to hear himB) he thought the baby didn’t have the power of speechC) he was a psychologist unworthy of his professionD) he thought the baby was not capable of any response58. According to the passage, which of the following is TRUE?A) A new infant can see only blurry shadows.B) A new infant’s senses are undevelopedC) All a new infant requires is nourishment, clean diapers, and a warm bassinet.D) A new infant is actually able to influence his or her environment59. What does the sentence “He is a glutton for novelty” probably mean?A) The newborn is greedy for new food.B) The newborn tends to overeat.C) The newborn always loves things that are new to him.D) The newborn’s appetite is a constant topic in no vels.60. According to the passage, it’s groundless to think that newbornsprefer________.A) a human face to a head-shaped outlineB) animate things to inanimate onesC) human voice to non-human soundsD) nourishment to a warm bassinet61. What is the passage mainly discussing about?A) What people know about newborns.B) How wrong parents are when they handle their babies.C) How much newborns have progressed in about a decade’s time.D) Why the first month of life is the most significant four weeks in a lifetime.Passage TwoQuestions 62 to 66 are based on the following passage.Mobile office is the mutual product of economic，scientific，and social progress.Mobile office has become a solution that provides users with convenient, prompt, safe, reliable, and reasonably priced communications and office faculty anywhere anytime via the support of mobile interconnection platform(MIP)and its applications systems. Using mobile office and WAP technology, people can do their work anywhere anytime, can send and receive data via terminals such as mobile phone, and palm computer, and can surf the Internet.When you leave your office to attend meetings or travel on business，what would happen to your business routine?Of course, faxes and e-mails would be still sent to your fax machine or e-mail box, but you cannot read them and make prompt reaction timely. When your clients need you to make some urgent modifications on your work and you are neither in the office nor carrying relevant documents, what can you do?Maybe you have to say “sorry” to the clients. But, your business will be affected，the clients will be unhappy and disappointed because of your delay，and you will lose a lot of business opportunities.In fact, very frequently, you need to check, reply, distribute, modify, or read some materials when you are not in your office. You must get out of this dilemma. The best solution to normally handle your business anywhere anytime and not to disappoint your clients is to let your office “move” with you. With the development of communications technology, mobile office has become simpler and smaller, and even can be realized via one mobile phone with data communications function. Thus, mobile office has already been put into your pocket, and office mobility has been realized.Mobile office has provided people with convenient, casual working environment, but at the same time it still has some unsatisfactory aspects such as mismatching equipment interface and inadequate battery. Nevertheless, we believe that with technical progress, people can certainly overcome all kinds of difficulties. Mobile office will realize the dream of completely free communication. Users will enjoy more colorful life and better working environment, and users’ living standard, working efficiency, and even enterprises’ production efficiency will certainly be immensely raised.注意：此部分试题在答题卡2上作答62. According to the passage, mobile office help you with the following except ________ .A) keeping update with the latest newsB) checking e-mails any time one wantsC) conducting internet surfingD) finding one’s true love in life63. Which of the following best expresses the main idea of the second paragraph?A) You would lose a lot of business opportunities if you always delay your work.B) You should read and reply faxes and e-mail timely.C) When you leave your office your business routine might be damaged.D) When you cannot meet the need of your clients you should immediately say sorry.64. When you let your office “move” with you, you __________ .A) will never let your clients downB) you don’t have to stay at office anymoreC) you then find the best way to handle your business anywhere anytimeD) you no longer face the dilemma between work and life65. It can be inferred from the passage that __________ .A) mobile office communication is very cost-consumingB) with the development of science, mobile office has eventually come to our lifeC) people had no convenient and reliable communications and office faculty beforeD) economic factors are essential in the operation of mobile office66. According to the author, mobile office _________ .A) would help achieve complete communication mobilityB) is too expensive to afford by small companiesC) has some fatal defects impossible to modifyD) is too complicated to operate in everyday businessPart V Cloze (15 minutes)Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A), B), C) and D) on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.For many people today, reading is no longer relaxation. To keep up their work, they have to read all kinds of materials. In _67_a job or advancing in one, the ability to read and comprehend _68_can mean the difference between success and failure. Yet the unfortunate fact is that most of us are _69_readers.Most of us develop poor reading _70_at an early age, and never get over them.The main deficiency _71_in the actual component of language itself-words. Take individually, words have _72_meaning until they are put together into phrases, sentences and paragraphs._73_, however, the untrained reader does not read groups of words. He laboriously reads one word at a time, often turning back to _74_words or passages.。
