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问题 单项选择题

围绕治安问题开展的社会教育，是维护社会治安的( )。

A．基本措施
B．根本措施
C．前提条件
D．战略性措施

答案

参考答案：D

解析： 围绕治安问题开展的社会教育，是维护社会治安的战略性措施。

完形填空

We have been in Australia for three days. We’re having a小题1:g_____ time here. Australia is the sixth largest country in the world. There is so小题2:m _____ to see that it is impossible for me to tell you everything. Sydney is a beautiful city. There are many big小题3:t _____ and beautiful flowers around the houses and they 小题4:l ____really beautiful. There are also some special小题5:a_____ in Australia, such as kangaroos and koalas. They are really lovely.

During the past three days we’ve visited many小题6:p_____of interest around Sydney.  I’d like to spend more time here.  But we will小题7:f_____ to another city, Cairns, to see coral beds (珊瑚礁) tomorrow.  It is said that words cannot小题8:d_____  the beauty of the colourful corals. Many famous cartoon films were made there. Now we are小题9:b ______  packing our bags so that we will not lose time when we leave.  We can enjoy 小题10:o______ in Cairns this time tomorrow, I’m looking forward to going there!
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选择题

如图所示，质量为

3
kg的A球和质量为3kg的B球被轻绳连接后，挂在光滑的柱上恰好处于静止状态，已知∠AOB=90°，则OB与竖直方向的夹角α为（　　）

A．30°

B．45°

C．60°

D．75°
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