单项选择题

According to the author, ______.

A．male and female roles in domestic tasks are biologically based
B．sex roles in economy reflect biological differences
C．sex roles in economy are socially not biologically determined
D．in all societies, sex roles follow similar patterns

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热门试题

单项选择题

Why do both explanations (Line 1, Para. 3) worry Asian Americans

A．They are afraid that they would again be isolated from American society in general.
B．People would think that Asian students rely on their parents for success.
C．Asian Americans would be a threat to other minorities.
D．American academic achievements have taken on too strong an Asian character.

单项选择题

It is implied in the passage that most drugs can be ______.

A．manufactured artificially
B．got from animal sources
C．found naturally in plants
D．made from tree bark