Question

【題目】閱讀下列短文，從每題所給的四個選項（A、B、C和D）中，選出最佳選項。

Scientists recently found three animal species living two miles below the surface of the Mediterranean Sea, where the super-salty waters don’t have oxygen(氧). They’re multicellular(多細胞的), which means their bodies have many cells. They each are as small as a large grain of sand. But they are animals.

The most exciting thing about these creatures, say the scientists, is that they obviously don’t need oxygen to live. What biologists know about life so far is that only single-celled living things can live in places that have no oxygen, and that multicellular organisms(有機物) can visit these places, but not live there. These newly found creatures could change that idea.

Finding animals down there was so surprising that the scientists couldn’t believe it. At first, “we thought they were dead bodies,” Roberto Danovaro, a scientist at the Polytechnic University of Marche in Ancona, Italy, told Science News. To find out whether the animals could actually live there Danovaro and his colleagues brought up more samples(樣本) from the ocean floor. Studying the animals in the new samples showed that they appeared to be alive.

The researchers did more tests, and found that some of the animals had eggs—which suggests they were reproducing(繁殖). Also in the samples were old skins, suggesting that the animals had lived there long enough to grow. Finally, pictures taken showed that the insides of the animals appear to be adapted to live in an environment that has no oxygen.

These clues suggest the animals don’t need oxygen, but the evidence(證據(jù)) is indirect, which means that scientists still have not observed how the animals live without oxygen. This means more studies are needed, but the scientists think they’re on the right track. And if they’re right, biologists will need to rethink what they know about where animals live.

【1】What excited the scientists most is that ______.

A.they found three animal species visit the salty water under the Mediterranean Sea

B.single-celled animals can live in super-salty waters

C.the tiny animals have many cells

D.three kinds of animals can live in places that have no oxygen

【2】The underlined phrase in Paragraph 2 means the scientists could think _____.

A.only single-celled creatures don’t need oxygen to live

B.multicellular animals can visit the super-salty waters

C.the newly found creatures can’t live in the super-salty waters

D.multicellular animals also can live without oxygen besides single-celled ones

【3】Which of the following CAN’T be used to prove the newly found creatures can live in super-salty waters?

A.Their dead bodies are found there.

B.Some in the samples have eggs.

C.Some old skins are found in the samples.

D.The pictures of their insides have been taken.

【4】More studies are needed to prove_____.

A.where single-celled animals can live

B.how the newly found animals live without oxygen

C.whether the multicellular creatures can live underwater

D.why the super-salty waters have no oxygen

Answer 1

【答案】

【1】D

【2】D

【3】A

【4】B

【解析】

試題分析：文章介紹了科學家在深海沒有氧氣的水中發(fā)現(xiàn)了三種多細胞的動物，并對他們是否能真正的在如此的環(huán)境中生存進行了研究。

【1】D 細節(jié)理解題。根據(jù)第一段和第二段可知，科學家在深海中發(fā)現(xiàn)了三種生物，最讓他們興奮的是這三種多細胞動物竟然是生活在沒有氧氣的水中。

【2】D 句意理解題。第二段中說到科學家們認為只有單細胞的動物才可以在沒有氧氣的水中生存，多細胞動物只能到達這樣的環(huán)境卻不能在這樣的環(huán)境中生存。所以這樣的發(fā)現(xiàn)可能改變科學家們原來的觀點。

【3】A 細節(jié)理解題。根據(jù)倒數(shù)第二段中的內容可知：在所取得的樣本中發(fā)現(xiàn)了有的動物有卵；也發(fā)現(xiàn)了他們退去的陳舊的皮膚；他們體內的照片也發(fā)現(xiàn)他們適應了沒有氧氣的環(huán)境。所有這些都間接地證明了這些動物是不需要氧氣的。

【4】B 細節(jié)理解題。根據(jù)最后一段的第一句指出目前的證據(jù)都是間接的，要想證明這些動物是如何在沒有氧氣的情況下生存還需要進一步的試驗。