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问题 单项选择题

Computer systems consist of two very different types of elements: (71 ) , which includes all the physical things that can be touched and Software, which tells the hardware how to do.

A. Operating system

B. I/O devices
C. Courseware


D. Hardware

答案

参考答案：D

单项选择题

抽油机的（）是指抽油机工作时，光杆运动的最高点与最低点之间的距离。

A、冲数

B、冲程

C、冲速

D、冲次
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翻译题

根据所给中文意思，用英文完成下列各句。

1. 在西方国家，许多家长经常留一些时间带孩子们去博物馆。

    In _____ , many parents often set aside some time to _____ to museums.

2. 我们不能只想着自己而不关心他人。

    We can't only _____ ourselves and never _____ others.

3. 素食星期一”建议人们每周至少有一天不吃肉，这样我们可以更好地保持健康。

    "Meatless Mondays" advises people _____ at least one day each week, so we can _____ in a better

     way.

4. 交通安全非常重要，过马路要小心。

    Traffic safety is very important. We should _____ when _____ .

5. 迈克，你要多做户外运动而不是整天在网上聊天。

    Mike, you should do more outdoor activities _____ all day.
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