问题 问答题

从不同的角度理解,环境分为哪几类

答案

参考答案:从环境的主体、环境性质、环境的范围等不同的角度可将环境进行分类。
(1)按环境的主体分,可分为人类环境和自然环境。
(2)按环境的性质可将环境分成自然环境、半自然环境和社会环境三类。
(3)按环境的范围大小可将环境分为宇宙环境、地球环境、区域环境、微环境和内环境。

完形填空

Cellphones help us easily find people anywhere at any time. However, using cellphones too often may cause cancer. (1) It’s reported that people who used a cellphone for 10 years or more were more likely to get brain cancer.

The suggestions below may help you reduce the risk(风险) of cancer:

◆When using your cellphone, try to keep it away from your body as much as possible. Don’t put it under your pillow(枕头) or on a bedside table when you sleep.

◆When you’re on the cellphone, use the speaker. In this way, you have just 1/100th of the contact with radiation you have when you hold (2) it to your ear. An earphone is also a good idea.

◆Try to keep your conversations short. If you need to talk longer, use an ordinary phone instead.

◆Change ears when you’re using your cellphone. Before putting it to your ear, wait until the person you are calling picks up the phone.

◆Your phone gives out radiation when you talk or text, but not when you’re listening or getting messages. (4) 多听和少说能降低癌症风险。

◆Do not use your cellphone when the signal is weak or when moving at a high speed, for example in a car or train. At high speeds your phone is trying to pick up signals, and this increases the radiation it gives out.

阅读短文,按要求完成下面的任务。

小题1:任务一 将(1)处画线部分翻译成中文。

小题2:任务二 (2) Where are you not supposed to put your cellphone when you sleep?

小题3:任务三 写出(3)处“it”所指代的内容。

小题4:任务四 将(4)处的中文翻译成英文。

小题5:任务五 (5) What’s the passage about?

单项选择题