大学英语改错练习题

改错练习(1)

（一）

Americans this year will swallow 15000 tons of

aspirin, one of safest and most effective drugs 1.__________

invented by man. The most popular medicines in the 2.__________ world today, it is an effective pain reliever. Its bad

effects are relatively mild, and it is cheap.

For millions of people suffered from arthrities, 3.__________

it is the only thing that works. Aspirin, in short, is

truly the 20th-century wonder drug. It is also the

second largest suicide drug and is the leading cause of

poisoning among children. it has side effects that, if 4.__________ relatively mild, are largely unrecognized between users. 5.__________ Although aspirin was first sold by Germam company

in 1899, it has been around much longer than that.

Hippocrates, in ancient Greece, understood the medical value

of the leaves and tree bark which today is known to 6.__________ contain salicylates, the chemical in aspirin. during the

19th century, there was a great number of experimentation 7.__________ in Europe with this chemical, and it led in the introduction 8.__________ of aspirin. By 1915, aspirin tablets were available

in the United States.

A small quantity of aspirin(two five-grain tablets)

relieves pain and inflammation. It also reduces down 9.__________ fever by interfering with some of the body's reactions.

Specifically, aspirin seems to slow down the formation

of the acids involved in pain and the complex chemical

reactions that cause fever. The chemistry of these acids

is not fully understood, and the slowing effect of aspirin 10.__________ is well known.

二

Crime has its own cycles, a magazine reported

some years before. Police records that were studied 1.__________

for five years from over 2400 cities and towns show

a surprised link between changes in the season and 2.__________

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 does rape and other violent 3.__________ attacks.Murder, however, is more than seasonal: it is a 4.__________ weekend crime. It is also a hightime crime: 62 percent

of members 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 being robbed between 6 p.m. and 2 a.m. on a Saturday 5.__________ night in December, January,or February. The most

uncriminal month of all? May--except for one strange

statistic. More dog bites are reported in this month

than in an other month of the year. 6.__________

Apparent our intellectual seasonal cycles are 7.__________

completely different from our criminal tendencies.

professor Huntington, of the Foundation for the Study

of Cycles, made extensive studies to discover the

seasons when people read serious books, attend scientific

meetings, make the highest scores on examinations,

and to propose the most changes to patents. In all 8.__________ instances, he found a spring peak and an autumn peak

separated by a summer low. On other hand, Professor 9.__________ huntinton's studies indicated that June is the peak

month for suicides and admissions in mental hospitals. 10.__________ June is also a peak month for marriages!

三

Only a generation ago, Mauritania's capital city was

many day's walk from the Sahara. Today it is in the Sahara. 1.__________ The sand blows through the city streets and piles up in 2.__________ walls and fences. The desert stretches out as far as the

eye can see.

In some parts of the Amazon rain forest in brazil, all

the trees have cut down. The earth lies bare and dry in the 3.__________ hot sun. Nothing grow there anymore. 4.__________

Over vast areas of every continent, the rainfall and

vegetation necessary for life is disappearing. Already 5.__________ more than 40 percent of the earth's land is desert and 6.__________ desert-like. About 628 million people--one out of seven--

live in these dry regions. In the past, they have managed to

survive, but in difficulty. Now, largely through problems 7.__________ caused by modern life, our existence is threatened by the 8.__________ slow, steady spread of the earth's deserts.

Many countries first became concerned in 1970s after 9.__________

a terrible drought and famine destroyed Africa's Sahel,

the fragile desert along the south edge of the Sahara.

Thousands of people died even though there was a worldwide

effort to send food and medicine to the starved people. 10.__________

四