2.By saying “one plus one equals three,or four,or more” in Paragraph 3,the author means that
.
A.bees united mean they are much more powerful
B.bees united mean they are much more poisonous
C.pesticides mixed mean they are much more poisonous
D.pesticides mixed mean they are much more effective
解析:选C。细节理解题。第三段最后一句“But together they form a poisonous soup of chemicals whose interplay (相互作用) can greatly reduce the effectiveness of bees’ immune systems,making them easier to suffer from diseases.”但是结合起来,他们形成了一种可以极大作用相互作用的有毒的化学物质,可以极大地降低蜜蜂免疫系统的有效性,使得他们更容易染上疾病。故选C。
3.The lesson people can learn from bees dying is that
.
A.medicine is as powerful as pesticide
B.our health might be threatened by pesticides
C.we should protect bees by reducing the usage of pesticides
D.medicine may be harmful to us when used together
解析:选D。推理判断题。根据第三段最后一句我们可以知道,这些农药混合在一起会形成很大毒素的化学物质,从而削弱蜜蜂的免疫力。由此推断出人也是这样的。故选D。
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