A new word is becoming more and more popular on the Internet in China - but no one knows quite what it means.The word "duang" is so new that you can't even find it in the Chinese dictionary. But it has already spread  like fire on the Chinese Internet , appearing more than 8,000,000 times on Weibo, where 15,000 users had more than 312,000 discussions. On Baidu, it has been looked up almost 600,000 times. But what does it mean? "Everyone's duang-ing and I still don't know what it means! Looks like I'd better go back to school now," said Weibo user Fahmida. Another user asked: "Have you duang-ed today? My mind is full of duang duang duang." "To duang or not to duang, that is the question," wrote user Beatrice. "Duang" seems to be imitating   a sound. It all seems to have started with Hong Kong action star Jackie Chan, who in 2004 appeared in a shampoo ad   where he used the sound "duang" to describe his soft and black hair. The word came to people again recently  after Chan posted it on his Weibo page. Thousands of users then began to visit Chan's Weibo page with comments  . The word seems to have many different meanings, and there's no perfect   Chinese meaning for it, but you could use it to give emphasis   to the word that follows it. A kid might be "duang cute", for example. In 2004, Jackie Chan used "duang" to   _  . A) show he was very popular B) describe his hair C) ask people to buy the shampoo D) reply to Weibo users' comments
B

Many people in the world have not seen snow. Some countries never have snow; some have only a little on top of the high mountains. In the north of England, there is quite a lot of snow every winter, but in the south of England, there is usually little. When a student from a warm country comes to England in autumn for the first time, he feels cold at first. There are often clouds, grey sky and cold rain in England in autumn, and most students from warm countries do not like this. But snow is different. It is beautiful. Perhaps, after several mornings, the student wakes up one day, and there is a lot of light in his room. He thinks, "Is it so late?" and jumps out of bed. But no, it is not very late. He looks out of the window and there is snow on the ground and on the houses and everywhere. The sentence "Is it so late?" means   _  . A) it's very late B) he wants to go to school C) he wants to catch a bus D) he usually gets up early
D

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, many cities in China have seen a lot of foggy days.In Beijing, only five days in January were free of smog . It is dirty air that looks like a mixture  of fog and smoke caused mainly by smoke from cars and factories in cities. Poor air has done harm to people's health, especially for children and old people. They fall ill easily and the hospitals are full of the the patients of respiratory   problems. To respond to the air  problems, the Chinese government and many Chinese people have  started to take action. Beijing announced plans to use cle an fuel in government vehicles and plant trees. It also asked citizens to set off fewer fireworks for celebrations. Three students from No.4 High School in Beijing wrote a report to advise how to fight the air pollution. They suggested that cars with large emissions  should not be allowed to use and factories should be closely watched. We hope more people will join us in making a difference. With all our efforts , the blue skies will certainly return for good. What are the main factors for PM2.5 according to the Chinese Academy of Sciences? A) driving cars and having fewer trees B) burning coal and having fewer trees C) having fewer trees and no rain D) driving cars and burning coal
D

Many places in the world need more fresh water . Every country is trying to find ways to turn salt water into fresh. Why aren't there many factories like the Symi factory? In some places, the sun isn't hot enough, or it doesn't shine every day. In these places other ways to heating  sea water can be used. These ways cost more money, but they work faster than the sun. By boiling  sea water with high heat,a lot of fresh water can be made quickly. But heating is not the only way to get fresh water from salt water. Other ways are tried. One way is freezing . The fresh part of salt water freezes first. To get fresh water, the pieces of ice are taken out. Which way is best? The one that gives the most water for the least money. It may be a different way for each place. Symi's way seems very good for small, hot places. It doesn't make very much water at a time. But the factory is easy to build and cost little. Which is the best way for small and hot places to get fresh water? A) Boiling or heating the sea water. B) The way in sunny places. C) The Symi's way. D) Freezing the sea water in cold places.
