污染物通过化学反应或生物降解作用，改变了毒性、存在状态和迁移

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问题单项选择题 B1型题

污染物通过化学反应或生物降解作用，改变了毒性、存在状态和迁移能力，这种转归形式称为（）

A.污染物的迁移

B.污染物的转化

C.生物富集

D.水体富营养化

E.有机物腐殖质化

答案

参考答案：B

单项选择题

调解委员会调节劳动争议，应当自当事人申请调解之日起（）日内结束；到期未结束的，视为调解不成。

A．15

B．19

C．30

D．60

翻译题

根据句子和中文提示填入适当的单词或词组。

1. Most of us have probably ______ ( 听说过) the Disneyland.

2. What I want to do is to travel to______ ( 说英语的国家).

3. You can go to Singapore . ______ ( 任何你喜欢的时候).

4. The underground is ______ ( 很少晚点).

5. The young man is helping that old lady ______ ( 穿过) a busy street.

6. I don't think a cat is a good pet for a 5-year-old child, because cats are too difficult to______ ( 照料) .

7. Hainan Island is seldom snowy, ______ ( 是吗) ?

8. I have been looking forward to ______ ( 浏览) Beijing Happy Valley for years.

9. The old man should not be______ ( 说) like that.

10. The more carefully you drive during the rush hour, ______ ( 越安全) you are.