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问题 选择题
小明同学利用圆珠笔杆、钢丝、细绳制成了如图所示的滑轮组用其匀速提升重物，不考虑摩擦、笔杆和绳重，下列说法正确的是（　　）

A．拉细绳的力F等于钩码重力G的

B．拉细绳的力F等于钩码重力G的

C．拉细绳的力F等于钩码重力G的

D．拉细绳下降的距离是钩码上升高度的

答案

答案：C

选择题

宋代诗人陈与义乘着小船在风和日丽的春日出游时曾经写了一首诗，如图所示，诗中“云与我俱东”所选取的参考系是

A．船

B．云

C．诗人

D．榆堤
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完形填空

用所给单词的适当形式填空。（共5分，10小题，每小题0.5分）

小题1:The ____________ children have difficulty in moving. They need help. (able)

小题2:It’s great ___________playing with snow in winter.(funny)

小题3:The girl jumped up and down when she heard the ___________ news.(cheer)

小题4:Many girls in the villages can’t go to school in the ________ part of our country.(north)

小题5:What are the ________ between the two brothers? (different)

小题6:She hopes to be an_________in the future.(act)

小题7:He made a wonderful ___________ at the meeting.(speak)

小题8:I hope this dictionary will be __________ in your study.(practise)

小题9:I don’t feel like ________anything. I have a cold.(eat)

小题10:Don’t spend too much time_______(play) computer games.
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