Question

【題目】 Americans were shocked to discover that the national bird was in danger of disappearing from the skies forever. Studies in 1970 showed only about 1,000, or fewer, bald eagles(禿鷹) in the country.

The major cause of the problem was people. The spread of civilization(文明) destroyed many of the eagles' feeding and nesting areas. And the eagles were being affected by D-D-T and other insect poisons. The poisons were in the animals the eagles ate. They reduced the eagles' ability(能力) to use calcium(鈣). This made the outside of the eagles' eggs very thin. Often, the eggs broke before baby birds were developed.

In 1972, the U. S. government banned(禁止) D-D-T. People also became interested in protecting places where eagles live. And stronger efforts were made to carry out laws protecting the birds. Scientists began a program that placed baby bald eagles which were born under human care, into nests of wild bald eagles. Often, the wild birds accepted the babies.

These efforts appear to have been successful in saving the American bald eagles. Today the number of the bald eagles has increased to more than 11, 000.

【1】The main reason of the problem that the bald eagles were in danger is ______.

A. calcium(鈣)B. peopleC. the programD. the wild animals

【2】The wild bald eagles seemed ______.

A. willing to raise the baby eagles hatched(孵出)by man

B. shocked they were in danger of disappearing

C. satisfied with D-D-T and other insect poisons.

D. unwilling to help the scientists to carry out the program

【3】If no measures had been taken, the bald eagles would ______.

A. have died out in the country

B. have nested(筑巢) in the mountains

C. have broken all their eggs

D. have become wild birds

【4】Today Americans are no longer ______ the bald eagle.

A. interested in B. disappointed in C. proud of D. anxious about

Answer 1

【答案】

【1】B

【2】A

【3】A

【4】D

【解析】

本文是說明文。短文介紹了人類文明的傳播摧毀了許多老鷹的覓食和筑巢區(qū)，使其面臨永遠從天空消失的危險。珍貴稀有的動物滅絕的主要原因是人類活動的影響。

【1】細節(jié)理解題。根據(jù)第二段第一句話The major cause of the problem was people. 這個問題的主要起因是人類本身。 故選B。

【2】細節(jié)理解題。根據(jù) Scientists began a program that placed baby bald eagles which were born under human care, into nests of wild bald eagles. Often, the wild birds accepted the babies.科學家們開始了一項計劃，將人類照顧下出生的小禿鷹放入野生禿鷹的巢中。通常，野鳥會接受這些幼鳥，可知野生禿鷹似乎愿意撫養(yǎng)被人類孵化的雛鷹 ，故選A。

【3】推理判斷題。根據(jù) Americans were shocked to discover that the national bird was in danger of disappearing from the skies forever. Studies in 1970 showed only about 1,000, or fewer, bald eagles in the country.美國人震驚地發(fā)現(xiàn)，禿鷹有永遠從天空消失的危險。1970年的研究表明，只有大約1000只或更少的禿鷹；These efforts appear to have been successful in saving the American bald eagles. Today the number of the bald eagles has increased to more than 11, 000.這些努力似乎成功拯救了美國禿鷹。今天禿鷹的數(shù)量已經(jīng)增加到超過11000只，可知如果沒有采取措施，禿鷹會滅絕 ，故選A。

【4】推理判斷題。根據(jù)These efforts appear to have been successful in saving the American bald eagles. Today the number of the bald eagles has increased to more than 11, 000.這些努力似乎成功拯救了美國禿鷹。今天禿鷹的數(shù)量已經(jīng)增加到超過11000只可知， 美國人不再擔憂禿鷹，故選D。