题目内容

By measuring the different intensity of courtship, the team aims to______.

A. find out which male birds are more attracted
B. get information to build a standard to compare
C. do the research in a novel way
D. figure out how male birds respond to females

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The neuroimaging studies show that shyness is______.

A. a kind of disability due to differences on the brain
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D. not a learned behaviour—it is innate

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