小明8步共走了2.97米，平均每步长大约是多少米？你认为结果应该

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问题选择题

小明8步共走了2.97米，平均每步长大约是多少米？你认为结果应该保留□小数比较好。□内应填 [ ]

A．整数

B．一位小数

C．两位小数

D．三位小数

答案

答案：C

多项选择题

机床负荷试验的目的是考核该机床主运动系统能否承受设计允许的（）。

A.扭矩

B.生产率

C.效率

D.功率

E.可靠性

填空题

请根据句意及英文释义选择或写出单词。

1. — Mom, I'd like some hamburgers. I think they are very _________ (nice, good).

— OK, we'll have them for lunch.

2. — Please come in and have a _________ (seat, sit).

— Thank you.

3. — Dad, would you like to _________ (get, takes) a new bike for me?

— Sure. What color would you like?

4. These are your oranges. Those are _________ (my oranges).

5. — What time do you often get up in the morning?

— At a _________ (fifteen minutes) past six.