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问题 单项选择题

加权算数平均数的大小（）

A.受各组次数f的影响最大

B.受各组标志值x的影响最大

C.只受各组标志值x的影响

D.受各组次数f和各组标志值x的共同影响

答案

参考答案：D

阅读理解

阅读理解

小题1:All the boys and girls like      .

A．playing basketball

B．reading comic books

C．flying kites

D．playing computer games小题2:_____ like flying kites.

A．Alice and Peter

B．Millie, Alice and Kate

C．Kate and Millie

D．Kate and Alice小题3:______doesn’t like reading comic books.

A．Alice

B．Peter

C．Tom

D．Kate小题4:No girls like______ .

A．playing basketball

B．reading comic strips

C．flying kites

D．playing computer games小题5:______ and ______have the same likes and dislikes.

A．Alice; Kate

B．Peter; Millie

C．Millie; Kate

D．Peter; Tom
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判断题

风电厂电气系统输电线路35kV架空线路的经济输送距离在10km以内为宜，极限输送距离在30km为宜。（）
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