单项选择题

Dolphins are evolved from （）.

A. fish-eating mammals.
B. sea animals. C. grass-eating fish.
D. land animals.

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热门试题

单项选择题

If British young people want to get the job they want, they （）.

A. should have at least two children
B. have to be more than 30 years old
C. should have been married for years
D. need a few years of work experience

单项选择题

34（）

A. careless
B. possible
C. selfish
D. former