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问题 单项选择题

给水系统各种井室内的管道安装。如设计无要求，井壁距法兰或承口的距离：管径小于或等于450mm时，不得小于（）mm。

A、200

B、250

C、300

D、350

答案

参考答案：B

句型转换

改写句子。

1. There are some CDs and hair clips on the desk. (一般疑问句)

     __________ there __________ CDs and hair clips on the desk?

2. He watches CCTV news every day. (改为否定句)

    He _________ __________ CCTV news every day.

3. There are two policemen at the gate. (对划线部分提问)

    __________ __________ policemen are there at the gate?

4. The girl goes to school by bus every day. (同义句) 

    The girl __________ a __________ to school every day.

5. Is he good at Maths? (同义句)

    __________ he __________ well in Maths?

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单项选择题

海伊斯科普课程的一日生活安排包括（）

A.五个环节

B.六个环节

C.七个环节

D.八个环节
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