单项选择题
Bats find insects in the dark of night with the help of ______.
A．echoes
B．eyesight
C．sound waves
D．none of the above
点击查看答案&解析
<上一题
目录
下一题>
热门
试题
单项选择题
Lazure Spallanzani demonstrated that a bat can get along well without eyesight through ______.
A．he caught some bats and blinded them and released them
B．four of these blind bats found their way back
C．he recaptured the four returned bats
D．the stomachs of the blind bats found to be filled with flying insects
点击查看答案&解析
单项选择题
This passage is mainly about ______.
A．living mechanisms and their artificial imitations
B．the remarkable sonar system of bats
C．the deficiencies of man-made sonars
D．the experiment of "blind-bats"
点击查看答案&解析
相关试题
It is generally agreed that the wr...
pick后插入up。
There改为Then。
doing改为to do。
of改为from。