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问题 单项选择题

手册中的“WARNING”说明的作用是（）

A、提醒施工者如果违反了手册中的规定，会危机人身或设备安全

B、提醒施工者，这是复杂的步骤

C、提醒施工者放慢工作节奏

D、提醒施工者留意工作参数

答案

参考答案：A

句型转换

小题1:Jack’s little sister likes to watch the program Where are we going, Dad?. （改为一般疑问句）

______ Jack’s little sister _______ to watch the program Where are we going, Dad??

小题2:The 20th FIFA World Cup was held in Brazil on June 13, Beijing time.（对划线部分提问）

________ ________ the 20th FIFA World Cup held in Brazil?

小题3:We have studied at this school for three years.（改为同义句）

Three years has ________ since we ________ to study at this school.

小题4:The girl is shy. She is afraid to speak in public. (合并为一句)

The girl is _____ shy ______ she is afraid to speak in public.

小题5:Michael will take care of our dog when we are away on holiday next week. (改为同义句)

Michael will ______ ______ our dog when we are away on holiday next week.
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问答题

根据如图回答问题．

（1）写出仪器①的名称______．

（2）用高锰酸钾制取氧气应选用的发生装置为（填字母编号，下同）______；

（3）实验室制取二氧化碳应选用的发生装置是______．

（4）实验室制取氢气可选用的装置为______．
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