(There are) twelve people (take part in) the experiment, four (working) (as) a g

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问题 (There are) twelve people (take part in) the experiment, four (working) (as) a group.

选项 A、There are
B、take part in
C、working
D、as

答案 B

解析

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Ifyouarelikemostpeople,yourintelligencevariesfromseasontoseason.