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问题 多项选择题

手动报警按钮安装正确的是（）。

A、应安装在墙上距地（楼）面高度1.5米处。

B、应安装牢固。

C、不得倾斜。

D、外接导线，应留有不小于10cm的余量，且在其端部应有明显标志。

答案

参考答案：A, B, C, D

改错题

假定英语课上老师要求同桌之间修改作文,请你修改你同桌写的以下作文,文中共有10处语言错误,每句最多有两处.错误涉及一个单词的增加,删除和修改.

增加:把缺词处加一个漏字符号(∧),并在其下面写出该词.

删除:把多余的词用斜线(＼)划掉.

修改:在错的词下划一横线,并在该词下面写出修改后的词.

注意:1.每处错误极其修改均限一词.

2.只允许修改10处,多者从第11处不记分.

I visited my aunt in the countryside near the city last week. I was surprising to see that great changes had been taken place in the countryside. Take my aunt’s family for example.We supply precious trees and flowers to the stores in the city and have ten workers working for themselves.Their family’s income reached as much 100 000 yuan last year.Not only did they have a house,a car and computers,they can also afford a trip abroad every year.When asking what else they needed most,they said that they wanted to learn a few English so that they could do business with foreigners directly.To their delighted,my cousin can use that he has learned from university to help them with overseas trade.
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选择题

“缥缈的雾，晶莹的露，凝重的霜，轻柔的雪，同样的水分子，装扮着我们生活的时空”。这是一首描述物理现象的抒情诗，对这首诗中所描述的物理现象理解正确的是[ ]

A．“缥缈的雾”是汽化现象

B．“晶莹的露”是液化现象

C．“凝重的霜”是凝固现象

D．“轻柔的雪”是熔化现象

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