华夏英语周刊八下第56期答案,我们目前整理分享关于华夏英语周刊八下第56期答案及其参考答案,2如需答案 请关注微信公众号：趣找答案/直接访问www.qzda.com(趣找答案)
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11．______ tablet computers like Apple's iPad just before bed，a researcher says recently，can lead to a poor night's sleep．（ ）
| A． | Using | B． | Used | C． | To use | D． | Use |
试题答案
分析 最近研究人员指出，在上床睡觉之前用笔记本电脑如苹果平板电脑，会导致晚上睡眠不好．
解答 答案：A
分析句子结构可知，______ tablet computers like Apple's iPad just before bed在句中作主语，应使用动词不定式或动名词作主语；由于此处表示普通的，一般的行为（使用动名词）；而不是表示某次具体的行为（使用动词不定式）；故选A．
点评 本题考查了动名词作主语的用法；做本题时，首先应通过分析句子结构，判断出空缺处在句中的成分；其次应掌握动词不定式作主语与动名词作主语的区别：
（1）动名词作主语通常表示抽象动作；而不定式作主语表示具体动作．
Smoking is prohibited here．这里禁止抽烟．（抽象）
It is not very good for you to smoke so much．你抽这么多烟对你身体很不好．（具体）
（2）动名词作主语时，通常用以表示一件已知的事或经验；不定式短语通常用来表示一件未完成的事或目的．
Climbing mountains is interesting．爬山很有趣．（经验）
Driving a car during the rush hour is tiring．在高峰时刻开车令人厌烦．（经验）
To finish the task will take a long time．要完成这项任务将要花费很长时间．（具体）
（3）不定式做主语，一般用it当形式主语，将作主语的不定式短语后置．
It took me only five minutes to finish the job．
（4）动名词做主语往往表示普通的，一般的行为；不定式作主语常常表示某次具体的行为．
Collecting information about children's health is his job．收集有关儿童健康的信息是他的工作．
It's necessary to discuss the problem with an experienced teacher．与一位有经验的老师讨论这个问题是有必要的．
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
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(多细胞的), 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(有机物) 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(样本) 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(证据) 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
