单项选择题

There are many kinds of synthetic materials,______ plastics are the most common.

A．between which
B．of which
C．in which
D．among which
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单项选择题
What is not the boy’s opinion towards Jenny’s decision
A．He thinks she is kidding.
B．He thinks she would get sick.
C．He thinks she wouldn’t get enough nutrition.
D．He thinks she is crazy.
单项选择题
What is the direct cause of Jenny’ s giving up eating meat
A．A TV program.
B．An article in newspaper.
C．A lecture.
D．A radio program.
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