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问题 单项选择题

国家发改委地区经济司副司长陈宣庆表示，我国正在研究制定长江三角洲区域发展规划、京津冀都市圈发展规划和成渝经济区发展规划。这是国家运用（）对国民经济进行调节。

A.经济手段

B.法律手段

C.行政手段

D.道德手段

答案

参考答案：A

阅读理解

Most people in Britain live in small family groups. More than a quarter of homes in Britain have only one person living in them. Some of these persons are old but some are of twenty to thirty who choose to live alone. 35% of homes have two people living in them, and another 17% have three people. 15% have four people living in them, and the other homes have five or more.

The families in Britain are small. It is unusual for parents to have more than two children. When children are about eighteen or nineteen, they leave their parents’ home, and they often go to other cities. Sometimes they only visit their parents two or three times a year.

根据短文内容，判断正(A)误( B)。

小题1:The passage is a report.

小题2:35% of homes in Britain have 3 people living in them.

小题3:The families in Britain are large.

小题4:Some are people of twenty to thirty who choose to live alone.

小题5:The passage mainly tells us the population in American.
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单项选择题

高层建筑室内新型单立管排水系统中，旋流弯头是一个（）。

A、内部装有特殊叶片的45度弯管

B、内部装有弹簧的30度弯管

C、外部涂有防水油漆的弯头

D、外部包有隔热层的弯头
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