4. According to Choes hypothesis,
A an ant still smells like a living when it dies.
B the I am dead chemical leaves the ants body when it dies.
C the I am not dead yet chemical is left when an ant dies.
D the I am not dead yet chemical leaves the ants body when it dies.
5. What is the result of the test on Choes hypothesis?
A It proves that his hypothesis is time.
B Not enough evidence has been found to support his hypothesis.
C It shows that his hypothesis is wrong.
D It indicates that his hypothesis needs revising.
答案与题解:
1. C 根据文章第二段和第三段的表述,阿根廷蚂蚁身上有种化学物质,它会告诉其他蚂 蚁I am dead.。文章没有说这种物质有毒,也没有说它能导致或预防死亡,所以其 他三项都是错误的选择。
2. B keep sb. from doing sth. 这个句型的意思是:使不做,阻止去
做。所以只有 B 是正确理解。
3. A 第三段和第四段告诉我们,蚂蚁身上会带有两种化学气味,I am not dead yet 和I am dead。这层意思分别在 B、C 和 D 中的表述出现。短文的第六段告诉我们, 蚂蚁死去时 ,I am not dead yet的气味就离开了它的躯体,剩下的就是I am dead 的 气味 。I am dead的气味不是死后新产生的化学物质。所以 A 是正确的选择。
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