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【判断题】
如果-3 x>9,那么 x>-3.A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】--- Can you tell me how many study groups there are in a class? --- Generally speaking, a class often ___ 8 study groups, each with 7 group members.
A.
is consisted of
B.
is made of
C.
made up of
D.
consists of
【单选题】How many groups of people using the scientific method are mentioned in the passage?
A.
Three.
B.
Two.
C.
One.
D.
Four.
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