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问题 问答题 简答题

能见度低都是由PM2.5引起的吗？

答案

参考答案：能见度低并不都是由PM2.5造成的。湿度、风速、风向等气象条件及雾、降水、浮尘等天气现象与能见度降低有密切关系。

翻译题

将短文中的划线部分译成汉语。

    All students need to have good study habits (1). When you have good study habits,

you can learn things quickly. You also remember them easily (2).

    Do you like to study in the living room? This is not a good place because it is

usually too noisy. You need to study in a quiet place, like your bedroom (3). A quiet

place will help you only think about one thing, and you will learn better.

1._____________________________________________________

2._____________________________________________________

3._____________________________________________________
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单项选择题

市场主体在经济活动中具有( )权，能决定生产(经营或消费)何种产品或劳务，并承担相应的市场风险。

A．自主经营
B．自主决策
C．价值使用
D．剩余价值索取
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