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[主观题]

Bats emit sounds and generally use the echoes of these sounds highly efficiently to detect

, locate, and catch their prey. However, it is claimed that the characteristic efficiency of this process is reduced by moths able to hear the sounds emitted by insect-eating bats. Which of the following statements, if true, best supports the claim above?

A.Those moths that cannot hear the sounds emitted by insect-eating bats live longer on the average than those that can hear such sounds when both kinds of moth are in an environment continuously free of such bats.

B.Those moth species that cannot hear the sounds emitted by insect-eating bats are among the species of insects that are most likely to be caught by such bats.

C.When a moth changes its speed or direction of flight, there is a change in the sound pattern generated by the moth"s wing movements.

D.Moth species that can hear the sounds emitted by insect-eating bats are less likely to be caught by such bats than are moth species that cannot hear these sounds.

E.Moths that are capable of hearing the sounds emitted by insect-eating bats differ in their abilities to use evasive action to escape capture by such bats.

提问人:网友snowCrystal 发布时间:2022-01-07
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