問題詳情

請依下文回答第 47 題至第 50 題Many animals adapt their behavior to the challenges they face either under natural conditions or in laboratoryexperiments. For example, in some parts of Africa, chimpanzees select suitable branches 47 they break off twigs toproduce a slender probe, which they poke into a termite nest so as to eat the termites 48 to it as it is withdrawn.Such ingenuity is not limited to primates. In late winter some beavers cut holes in the dams they have previouslyconstructed, causing the water level to drop, which allows them to swim about under the ice without holding their breath.Certain insects, specifically the honeybees, 49 symbolic gestures to communicate the direction and distance theirsisters must fly to reach food.These are only a few of the more striking examples of animals’ versatile behavior. 50 insisting that animals donot think at all, many scientists now believe that these animals sometimes are capable of simple thoughts, although thesethoughts are probably different from any of ours.
47
(A) that
(B) which
(C) with that
(D) from which

參考答案

答案：D
難度：非常困難0
統計：A(1),B(0),C(0),D(0),E(0)

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