外研社,新编大学英语综合教程4,Unit6 Risk,Quiz

外研社，新编大学英语综合教程4

Unit6Risk

Quiz

1. Choose the one word or phrase that best keeps the meaning of the original sentence if

it is substituted for the underlined word or phrase.

1. The first span of the bridge is one hundred meters long.

A. preface

B. section

C. block

D. phase

2. Statistics indicate that there are more boys than girls attending school.

A. Numbers

B. Account

C. Schoolmaster

D. Calculations

3. Lampreys (七鳃鳗) and hagfish (盲鳗) have slimy, scaleless bodies shaped somewhat like the

bodies of eels.

A. in some cases

B. at some times

C. to some degree

D. for some reasons

4. De Vaca did the only wise thing by asking the Indians for food and shelter in their village.

A. sensitive

B. sensible

C. sentimental

D. sensational

5. The United States was a divided nation in 1850—half slave and half free.

A. allied

B. combined

C. separated

D. united

6. Virtually all species of animals communicate either through sounds or through a large repertory of

soundless codes.

A. Simultaneously

B. Absolutely

C. Basically

D. Almost

7. A baby's blood has slightly more hemoglobin (血红素) than that of an adult.

A. no

B. a little

C. even

D. very much

8. In a 1983 newspaper poll, Ann Landers, an advice columnist, was listed among the twenty-five

most influential women in the United States.

A. survey

B. article

C. headline

D. conference

9. A fundamental premise (前提) of a free-enterprise economic system is that all small business face

difficult competition.

A. confront

B. take

C. lose

D. appreciate

10. A cup of whole milk provides roughly one hundred and sixty-six calories (热量) of energy.

A. barely

B. coarsely

C. only

D. approximately

11. Tanagers (唐纳雀) are usually found in the forests, where they feed on insects, fruits, and flowers.

A. hunt

B. eat

C. keep

D. see

12. Probability is the mathematical study of the likelihood of an event's occurrence.

A. predictability

B. possibility

C. feasibility

D. undeniability

2. Choose appropriate words to complete the following passage.

Where do pesticides (杀虫剂) fit into the picture of environmental disease? We have seen that

they now soil, water, and food, and that they have the to make our streams fishless and our gardens and woodlands silent and birdless. Man, (15)

he may like to pretend the contrary, is part of nature. Can he escape a pollution

that is now so thoroughly throughout our world?

We know that even single exposures these chemicals, if the amount is (18)

sudden illness or death of farmers, farm workers, and others sufficient quantities of pesticides is very sad and should not occur. For the population as a whole, we must be

more with the delayed effects of absorbing small amounts of pesticides that

pollute our world.

Responsible public health officials have that the biological (23)

of chemicals are cumulative (累积的) over long periods of time, and that the danger to

the individual may the sum of the exposures received throughout his or her lifetime. For these very reasons the danger is easily ignored. It is human nature to shake off (摆脱，避

开) may seem to us a threat of future disaster. "Men are naturally most impressed by

diseases which have obvious

of their worst enemies slowly

Your answer Correct answer

(13) pollute pollute

(14) power power

(15) however much however much

(16) distributed distributed