Question

【题目】 People usually check whether their keys, wallets and phones are with them before going out. But many people in China now have one more important thing to take, a face mask. They hope that it can protect them from polluted air.

Since January 2013, many cities in China have seen a lot of foggy days. In Beijing, only five days in January were free of smog (雾霾). What’s the difference between fog and smog?

According to scientists, fog is made up of tiny (微小的) drops of water and also ice particles (颗粒) during very cold conditions. Smog is dirty air that looks like a mixture of smoke and fog, caused mainly by smoke from cars and factories in cities.

An official for the Ministry of Environmental Protection told Beijing News that PM2.5 pollution is the main problem with air pollution. PM 2.5 refers to pollution with small particles 2.5 micrometers or less in diameter (直径).

According to the Chinese Academy of Sciences, two main factors that cause PM 2.5 are motor vehicles and the burning of coal.

Poor air has done harm to people’s health. Children and the elderly are more at risk. A report from Beijing Children’s Hospital shows that from December 5 to December 11, 2013, half of the patients in the hospital came for respiratory (呼吸道的) problems.

Air problems and environmental protection have become a care for the whole nation.

Premier Li Keqiang made his last Government Work Report(政府工作报告) on March 6, 2014. The report said that the government should work hard to prevent pollution and give people a healthy living environment.

It calls on people to make full use of energy and resources (资源) and cut down on energy use.

‘We should give people hope through our actions,’ Li said.

【1】The underlined phrase “were free of” means _______________.

A. had some B. had no

C. had many D. had more and more

【2】According to the third paragraph, we can know that________________.

A. fog is made up of drops of water with smoke

B. smog is formed (形成) during cold hours

C. smog is a mixture of fog and smoke

D. smoke from cars and factories cause fog

【3】 Paragraphs 4 and 5 are mainly about ________________.

A. what PM 2.5 is and how to protect ourselves against PM 2.5

B. how to prevent PM 2.5 pollution and how PM 2.5 looks

C. what PM 2.5 is and what causes PM 2.5

D. how seriously PM 2.5 affects us and how to deal with PM 2.5

【4】From Li Keqiang’s report, we learn that __________________.

A. the environment has improved a lot since Li was in office

B. many people have breathing problems because of the air pollution

C. the air pollution problem is the government’s task

D. the government will try its best to solve the air pollution problem

Answer 1

【答案】

【1】B

【2】C

【3】C

【4】D

【解析】

试题分析：本文介绍了中国的许多城市的空气都被污染了，造成空气污染的主要因素有两个，开车和煤炭燃烧。很差的空气对身体健康危害很大，特别是对孩子和老人。我们政府正在采取措施防止污染，给人们一个健康的生活环境。

【1】B词义猜测题。根据短文中的句子In Beijing, only five days in January were free of smog (雾霾).可知，在北京，1月份只有五天没有雾霾天气。故划线部分的意思是“没有”，答案为B。

【2】C 细节理解题。根据短文中的句子“Smog is dirty air that looks like a mixture of smoke and fog,”可知，雾霾是烟和雾的混合物。故答案为C。

【3】C 段落大意题。根据短文中的句子“PM 2.5 refers to pollution with small particles 2.5 micrometers or less in diameter (直径).” PM 2.5指直径在2.5微米或更少小颗粒的污染。及句子“two main factors that cause PM 2.5 are motor vehicles and the burning of coal.” 可知，导致PM 2.5是机动车辆和煤的燃烧。故答案为C。

【4】D细节理解题。根据短文中的句子“The report said that the government should work hard to prevent pollution and give people a healthy living environment.”可知，政府应该努力防止污染和给人们一个健康的生活环境。故答案为D。