Question

请阅读下面图文，简要回答所给问题。

Air pollution in many cities has been more and more serious.Especially in winter，we see a lot of foggy days in North China.PM 2.5 in the air can harm human health.PM 2.5 refers to small particles(颗粒) which are 2.5 micrometers(微米) or less in diameter.

What's the cause of PM 2.5 pollution?

Daily average particulate pollution (PM 2.5)

The 10 worst Chinese cities

The cities in North China are facing a more serious situation than the other parts.For example，Shenzhen and Guilin in the south of China are regarded as smog－free cities.While some cities，like Xingtai，Shijiazhuang and Baoding are among the most polluted cities.

1.What does PM 2.5 refer to?

______________________________________

2.What causes the most pollution in Beijing according to the chart？What percent is it?

___________________________________

3.Are Shenzhen and Guilin smog cities?

___________________________________

4.Which Chinese city is polluted most seriously according to the chart?

___________________________________

5.What will you do to reduce air pollution?

___________________________________

Answer

1.It refers to small particles which are 2.5 micrometers or less in diameter.

2.Vehicles.31%.

3.No，they_aren't.

4.Xingtai.

5.I will walk or ride a bike to school./…

【解析】

本文通过一些表格信息呈现了北京市大气污染的原因及中国北方各城市的环境污染状况。

1.句意：PM2.5指什么？根据PM 2.5 refers to small particles(颗粒) which are 2.5 micrometers(微米) or less in diameter. 可知PM2.5是指直径小于等于2.5微米的颗粒物，故答案为原文原句。

2.句意：根据表格信息，在北京是什么造成了最多的污染？百分数是多少？根据表格信息可知，车辆是引起北京空气污染的重要原因，所占比重为31%，故本题填Vehicles.31%.

3.句意：深圳和桂林是烟雾（污染）城市吗？根据Shenzhen and Guilin in the south of China are regarded as smog－free cities. 可知其均是无烟城市，故填No，they aren't.

4.句意：根据表格信息，中国哪座城市污染最为严重？根据Daily average particulate pollution. （日均颗粒物污染）统计表格，可知邢台污染最为严重，故填Xingtai.

5.句意：你将会做什么来减少污染？本题为开放性试题，根据材料内容，我们应该选择低碳环保的出行方式，如骑自行车或步行等。故可填I will walk or ride a bike to school.