下面是小编整理的四级阅读考前补习4，本文共10篇，欢迎大家阅读分享借鉴，希望对大家有所帮助。本文原稿由网友“姹紫嫣红”提供。
篇1：四级阅读考前补习4
四级阅读考前补习（4）
Test Four
1
In the early days of sea travel, seamen on long voyages lived exclusively on salted meat and biscuits. Many of them died of scurvy(坏血病), a disease of the blood which causes swollen gums, livid white spots on the flesh and general exhaustion. On one occasion, in 1535, an English ship arrived in Newfoundland with its crew desperately ill. The men’s lives were saved by Iroquois Indians who gave them vegetable leaves to eat. Gradually it came to be realized that scurvy was caused by some lack in the sailors’ diet and Captain Cook, on his long voyages of discovery to Australia and New Zealand, established the fact that scurvy could be warded off by the provision of fresh fruit for the sailors.
?Nowadays it is understood that a diet which contains nothing harmful may yet result in serious disease if certain important elements are missing. These elements are called “vitamins”. Quite a number of such substances are known and they are given letters to identify them, A, B, C, D, and so on. Different diseases are associated with deficiencies of particular vitamins. Even a slight lack of Vitamin C, for example, the vitamin most plentiful in fresh fruit and vegetables, is thought to increase significantly our susceptibility(敏感度) to colds and influenza.
?The vitamins necessary for a healthy body are normally supplied by a good mixed diet, including a variety of fruit and green vegetables. It is only when people try to live on a very restricted diet, say during extended periods of religious fasting(斋戒), or when trying to lose weight, that it is necessary to make special provision to supply the missing vitamins.
?1. Scurvy is a disease that is provoked by ____
?A. salted meat and biscuits
?B. exhaustion
?C.
篇2：四级阅读考前补习3
四级阅读考前补习（3）
Test Three
1
It is hard to get any agreement on the accurate meaning of the term “social class”. In everyday life, people tend to have a different approach to those theyconsider their equals from that which they assume with people they consider higher or lower than themselves in the social scale. The criteria we use to “place” a new acquaintance(熟人), however, are a complex mixture of factors. Dress, way of speaking, area of residence in a given city or province, education and manners all play a part.
?In Greece, after the sixth?century B.C., there was a growing conflict between the peasants and the landed aristocrats(贵族), and a gradual decrease in the power of the aristocracy when a kind of “middle class” of traders and skilled workers grew up. The population of Athens, for example, was divided into three main classses which were politically and legally distinct. About one?third of the total were slaves, who did not count politically at all, a fact often forgotten by those who praise Athens as the nursery of democracy. The next main group consisted of resident foreigners, the “metics”, who were freemen, though they two were allowed no share in political life. The third group was the powerful body of “citizens”, who were themselves divided into sub?classes.
?In the later Middle Ages, however, the development of monetary economy and the growth of cities and trade led to the rise of another class, the “burghers” or city merchants and mayors. These were the predecessors of the modern middle classes. Gradually high office and occupation assumed importance in determining social position, as it became more and more possible for a person born to one station in life to move to another. This change affected the towns more than the country areas, wher
>>篇3：四级阅读考前补习2
四级阅读考前补习（2）
Test Two?
1
If the salinity(含盐量)of ocean waters is analyzed,it is found to vary only slightly from place to place.Nevertheless,some of these small changes are important.There are three basic processes that cause a change in oceanic salinity.One of these is the subtraction of water from the ocean by means of evaporation―conversion of liquid water to water vapour.In this manner,the salinity is increased,since the salts stay behind.If this is carried to the extreme,of course,white crystals of salt would be left behind; this, by the way,is how much of the table salt we use is actually obtained.?
The opposite of evaporation is precipitation(降水),such as rain,by which water is added to the ocean.Here the ocean is being diluted(冲淡)so that the salinity is decreased.This may occur in areas of high rainfall or in coastal regions whererivers flow into the ocean.Thus salinity may be increased by the substraction of the water by evaporation,or decreased by the addition of fresh water by precipitation or runoff.?
Normally,in tropical regions where the sun is very strong,the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation.Similarly,in coastal regions where rivers dilute the sea,salinity is somewhat lower than in other oceanic areas.?
A third process by which salinity may be altered is associated with the formation and melting of sea ice.When seawater is frozen,the dissolved materials are left behind.In this manner,seawater directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared.Of course,when this ice melts,it will tend to decrease the sal
篇4：四级阅读考前补习5
四级阅读考前补习（5）
Test Five?
1?
The exact number of English words is not known. The large dictionaries have over half a million entries, but many of these are compound words (schoolroom, sugar bowl) or different derivatives of the same word (rare―rarely, rarefy), and a good many are obsolete words to help us read older literature. Dictionaries do not attempt to cover completely words that we can draw on: the informal vocabulary, especially slang, localism, the terms of various occupations and professions; words use only occasionally by scientists and specialists in many fields; foreign words borrowed for use in English; or many new words or new senses of words that come into use every year and that may or may not be used long enough to warrant being included. It would be conservative to say that there are over a million English words that any of us might meet in our listening and reading and that we may draw on in our speaking and writing.
?Professor Seashore concluded that first?graders enter school with at least 2,000 words and add 5,000 each year so that they leave high school with at least 80,000. These figures are for recognition vocabulary, the words we understand when we read or hear them. Our active vocabulary, the words we use in speaking and writing, is considerably smaller.
?You cannot always produce a word exactly when you want it. But consciously using the words you recognize in reading will help get them into your active vocabulary. Occasionally in your reading pay particular attention to these words, especially when the subject is one that you might well write or talk about. Underline or make a list of words that you feel a need for and look up the less familiar ones in a dictionary. And then
篇5：四级阅读考前补习7
四级阅读考前补习（7）
Test Seven?
1?
Lacking a cure for AIDS, society must offer education, not only by public pronouncement but in classrooms. Those with AIDS or those at high risk of AIDS suffer prejudice, they are feared by some people who find living itself unsafe, while others conduct themselves with a“bravado(冒险心理)” that could be fatal. AIDS has ?afflicted a society already short on humanism, open handedness and optimism. Attempts to strike it out with the offending microbe are not abetted(教唆) by preexisting social ills. Such concerns impelled me to offer the first university level undergraduate AIDS course, with its two important aims:
?To address the fact that AIDS is caused by a virus, not by moral failure or societal collapse. The proper response to AIDS is compassion coupled with an understanding of the disease itself. We wanted to foster(help the growth of) the idea of a humane society.
?To describe how AIDS tests the institutions upon which our society rests.The economy, the political system, science, the legal Establishment, the media and our moral ethical?philosophical attitudes must respond to the disease. Those responses, whispered, or shrieked, easily accepted or highly controversial, must be put in order if the nation is to manage AIDS. Scholars have suggested that how a society deals with the threat of AIDS describes the extent to which that society has the right to call itself civilized. AIDS, then, is woven into the tapestry(挂毯) of modern society; in the course of explaining that tapestry, a teacher realizes that AIDS may bring about changes of historic proportions. Democracy obliges its educational system to prepare students to become informed citizens, to join their voices to the public debate inspired by AIDS. Who shall
>>篇6：四级阅读考前补习6
四级阅读考前补习（6）
Test Six?
1
It is common knowledge that drug abuse leads to harmful consequences. Why then do people―particularly youngsters―continue to use drugs? Psychologists claim that there are three basic motivations that influence people to take drugs: curiosity, stress and environmental factors. Sometimes, youngsters take drugs simply because they are curious. Taking drugs seems to be the “in?thing” for their generation, so they want to know what drugs are like. The trouble is that they do not know that taking soft and seemingly innocuous(无害的) drugs can develop into cravings(渴望) for stronger stuff later on. In some cases, youngsters are depressed or frustrated because of problems related to parents, school or the opposite sex. They take drugs to escape from the stress brought on by all these problems. In other cases, the environment is conductive to taking drugs. If, for instance, a youngster belongs to a community, school, or peer group where other youngsters take drugs, he may soon be tempted to follow suit, for fear of ostracism or non?acceptance.
?There is a growing consensus nowadays among social workers and psychologists that the best possible approach to the problem of drug addiction among the young is for school authorities, social workers and the Police Narcotics Division to work together to provide young people with much?needed education on the effects and dangers of drug abuse. Moreover, parents can do a great job in leading children away from drugs. They should spend more time with their children, listening and talking to them. Most importantly, parents should show them attention, concern and love. Parents who always scream at their children and nag(唠叨) them about their failings and weaknesses are regarded as unwitting drug pushers. As far as young people are concern
>>篇7：四级阅读考前补习1
四级阅读考前补习（1）
Test One??
1
Crime has its own cycles,a magazine reported some years ago.Police records that were studied for five years from over 2,400 cities and towns show a surprising link between changes in the seasons and crime patterns.?
The pattern of crime has varied very little over a long period of years.Murder reaches its high during July and August,as do rape and other violent attacks.Murder,moreover,is more than seasonal:it is a weekend crime.It is also a nighttime crime:62 percent of murders are committed between 6 p.m. and 6 a.m.?
Unlike the summer high in crimes of bodily harm,burglary has a different cycle.You are most likely to be robbed between 6 p.m. and 2 a.m. on a Saturday night in
December,January,or February.What is the most uncriminal month of all?May―except for one strange statistic.More dog bites are reported in this month than in any other month of the year.?
1.The main idea of paragraph 1 is ____.?
A.crime is a serious social problem?
B.there is a link between change in the seasons and crime patterns?
C.crime is not linked to the change in season?
D.2,400 towns were studied for five years?
2.The subject of paragraph 2 is ____.?
A.Summer cime B.burglary?
C.murderD.nighttime crime?
3.According to the passage,a murder would most likely occur ____.?
A.on a weekend night in winter?
B.on a weekend afternoon in summer?
C.on a Saturday night?
D.on a weekend night in summer?
4.In paragraph 2 “it is also a nighttime crime,”it refers to ____.?
A.murderB.62 percent?
C.weekend crimeD.rape?
5.In paragraph 3,what is the one strange statistic for May??
A.There are more dog bites in May.?B.There are more robberies in May.?
C.There is the most crime in May.?D.There are more murders in May.??
2
Once a peasant lost his horse and he went to town to buy another.Among the horses on sale he saw his o
篇8：六级阅读考前补习4
六级阅读考前补习（4）
Test Four
1
Running a fever was once thought to be the prerogative of warmblooded creatures, whose internal temperatures are indpendent of the weather. But, as Matthew Kluger reported in “The Importance of Being Feverish” (January 1976), lizards can also develop fevers, even though there is no question that they are coldblooded. They raise their temperatures by moving into the sun or, in the case of Kluger’s experiments, under a sun lamp. And it seems to do them some good. Sick lizards kept in cages at feverish temperatures fare much better than their counterparts in normal and cool environments.
?Now, fever has spread to invertebrates(无脊椎动物). Recent studies have shown that crayfish and scorpions can develop fevers. Crayfish injected with bacteria and scorpions injected with prostaglandins(前列腺素) swam and scuttled to hot areas. (Prostaglandins are hormones thought to be instrumental in the development of a fever.)
?Evidence is also mounting that moderate fevers have their benefits, which might explain why the fever process is so widespread. Leukocytes, white blood cells that are active in fighting bacterial infections, are more mobile at febrile temperatures. And fevers reduce the amount of iron available to bacteria. That reduction, combined with high temperatures, has been shown to inhibit bacterial growth.
1. Which of the following best states the main idea of the passage??
A. Coldblooded animals can develop fevers.?
B. There are benefits to developing fevers.?
C. Fevers inhibit bacterial growth.?
D. Lizards can develop fevers.?
2. Fevers cause ____.?
A. prostaglandins to be formed?
B. iron to be made available to bacteria?
C. leukocytes to be more mobile?
D. lizards to be coldblooded animals?
3. Which of the following statements is true??
A. Developing fever is the privilege of warm?blooded animals, so sick lizards can not run a fever.?
B.
篇9：四级词汇考前补习1
四级词汇考前补习（1）
Test 1?
Directions:There are 30 incomplete sentences in this part.For each sentence there are four choices marked A),B),C)and D).choose the ONE answer that best completes the sentence.
1.He never thought of it before,______the tie of their blood.?
A.taking granted B.taking for granted?
C.taking it for granted D.so take for granted?
2.The death of his wife was a big blow to him.He just couldn’t ___it.?
A.get on B.get over?C.get along with D.get through?
3.I knew I was wounded,but strangely enough,I did not feel any ___.?
A.ache B.hurt?C.pain D.painful?
4.Goe has a family of six to ___.?
A.live B.raise?C.support D.feed?
5.My brother ___ in an electronics factory ever since he graduated.?
A.has been working B.has worked?C.had worked D.worked?
6.The department has ___ an English film to be shown every week.?
A.arranged B.planned?C.set up D.arranged for?
7.The peasants naturally will ___ this new policy.?
A.benefit from B.make profit in C.make money from D.benefit in?
8.He was in a ___ mood,so I had the courage to explain the whole situation to him.?
A.relaxing B.relax?C.relaxed D.relaxation?
9.The girl insists that she ___ jobs usually d
篇10：六级词汇考前补习4
六级词汇考前补习（4）
Test 4
Directions: There are 30 incomplete sentences in this part. For each sentence there are four choices marked A), B), C) and D). Choose the ONE that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the center.
1.This pair of boots cost much less than yours for I bought them when the department store made a ____ of the stored
goods.?
A. clearance B. reduction C. fortune D. deal?
2.Lacking ____ political goals, the two parties quarrelled away.?
A. intricate B. coherent C. intrinsic D. distinct?
3.I’m afraid that we might ____ some opposition to implement the daring plan.
A. come across B. come up against?
C. come at D. come up with?
4.A monument was built to ____ those who died in the civil war.?
A. congratulate B. remind ?
C. commemorate D. memorize?
5.Working far away from his home, he had to ____ from Oxford to London every day.
A. commute B. wander C. ramble D. motion?
6.A train is not ____ to a plane for speed.?
A. equivalent B. equal
C. comparable D. agreeable?
7.The couple has divorced as they are not ____?.?
A. friendly B. sociable
C. easy?going D. compatible?
8.Growing too fast and lacking efficiency, our firm is no
