Question

【题目】B. Choose the words or expressions and complete the passage (选择最恰当的单词或词语完成短文):

Number sense is not the ability to count. It is the ability to recognize a change in number. Human beings are born with this ability. Surprisingly, ______ show that many animals are, too. For example, many birds have good number sense. If a nest (巢) has four eggs and you remove one, the bird will not notice. However, if you remove two, the bird generally leaves. This means that the bird ______ the difference between two and three.

Another interesting test showed a bird’s ______ number sense. A man was trying to take a photo of a crow that had a nest in a tower, but the crow always left when she saw him coming. The bird did not ______ until the man left the tower. The man had an idea. He took another man with him to the tower. One man left and the other stayed, but they weren’t successful in

fooling the bird. The crow stayed away until the second man left, too. The test was ______ with three men and then with four men. It was not until five men went into the tower and only four left that they finally managed to take a photo.

How good is a human’s number sense? It’s not very good. For example, babies about fourteen months old ______ notice if something is taken away from a small group. But when the number goes beyond three or four, the children are often very confused.

It seems that number sense is something we have in common with many animals in this world, and that our human ability is not much better than a cow’s.

【1】A.ideasB.plansC.experimentsD.proverbs

【2】A.went outB.found outC.looked outD.turned out

【3】A.forgetfulB.friendlyC.amazingD.silly

【4】A.escapeB.returnC.flyD.sing

【5】A.repeatedB.mentionedC.noticedD.produced

【6】A.neverB.rarelyC.properlyD.usually

Answer 1

【答案】

【1】C

【2】B

【3】C

【4】B

【5】A

【6】D

【解析】

数感不是指数数的能力。而是能够意识到数量上的改变。不仅人类天生具有这种能力，动物同样有这种能力。本文分别介绍了人类和动物的数感能力。

【1】句意：实验表明很多动物也有这种能力。

ideas想法；plans计划；experiments实验；proverbs谚语。根据For example后举鸟对蛋数量的感知以及Another interesting test可知此处应该为实验研究表明。故选C。

【2】句意：这意味着鸟发现了两个和三个的区别。

went out离开；found out发现；looked out像外看；turned out结果表明。主语是the bird，因此排除D。根据However, if you remove two, the bird generally leaves.句意可知鸟发现了区别所以离开了。故选B。

【3】句意：另一个有趣的测试显示了鸟惊人的数感。

forgetful健忘的；friendly友好的；amazing惊人的；silly愚蠢的。根据上一段的实验以及…many animals are, too.可知鸟是有数感的。此空是副词形容词作定语修饰number sense，只有C符合句意。故选C。

【4】句意：直到人离开塔乌鸦才会回来。

escape逃跑；return回来；fly飞；sing唱歌。not…until表示“直到……才”，根据but the crow always left when she saw him coming.“在她看到人的时候乌鸦总是飞走。”以及The crow stayed away until the second man left, too.。可推测乌鸦直到人走了以后，她才会回来。故选B。

【5】句意：这个测验用三个人，然后四个人反复试验。

repeated反复；mentioned提到；noticed注意到；produced产生。根据with three men and then with four men. It was not until five men went into the tower and only four left that they finally managed to take a photo.可知他们用三个人、四个人、五个人反复进行实验。故选A。

【6】句意：例如，十四个月大的宝宝如果小群体里有东西被拿走他总能注意到。

never从不；rarely很少地；properly适当地；usually通常。根据But when the number goes beyond three or four, the children are often very confused. 可知当数量超过三个或四个，孩子经常很困惑。but表示转折关系，可以推测but之前表示，宝宝通常都能注意到。usually符合句意。故选D。