Smog(雾霾) is a kind of air pollution. It makes the sky look g

Smog(雾霾) is a kind of air pollution. It makes the sky look grey and dirty, and its air pollutants(污染物) come from many kinds of natural and manmade sources.
Smog is a big problem for our daily life. In smog weather, many people choose to wear masks (口罩) when they go out. And just because of smog weather, many traffic accidents have happened，many flights are stopped, a lot of people have to stay at home because they think the air is dangerous, and more people with different diseases have to go to see the doctor.
People now see the great danger of the smog and the importance of caring the environment. People all over the country are taking actions. First of all, the laws (法律) must be carried out(执行) strictly. Secondly, it will be better for people to go to work or school with public traffic, such as the bus and subway, instead of the car. What’s more, we should plant more trees.
小题1:What is smog?
A. A kind of water pollution.    B. A kind of noise pollution.     C. A kind of air pollution.
小题2:In smog weather, what do many people choose to wear?
A. Masks.                B. Sweaters.          C. Jackets.
小题3:In smog weather, what may happen?
A. There are more people exercising in the park.
B. There are more traffic accidents on the road.
C. Nobody goes to the hospital.
小题4:What can we do to do with smog?
A. Try not to use public traffic.
B. Carry out the laws strictly.
C. Plant fewer trees.
小题5:According to the passage, which of the following is NOT true?
A. Smog makes the sky look terrible.
B. It tells us two ways to protect environment.
C. Taking public traffic is good for the environment.