We humans love to scare ourselves. Newspapers and TV news are full of shock-horror stories about the killer flu virus but are there things we can do to cut our risk of catching it? Every year, people in Britain catch the flu virus and some of those who are already ill, or are very young, may die. It is very sad, but modern treatment means that many deaths can be avoided. Experts tell us that the world is another flu epidemic and that the latest bird-flu virus would be the most likely cause. Humans can catch the disease only after closely contacting with a sick bird. However, if someone who had normal flu was to come into contact with bird flu, this could be very dangerous. The bird flu virus could attach itself to the human flu virus, _ and then start to spread from person to person. Coughs and sneezes always have spread diseases, especially colds and flu, and they still do. If bird flu does begin to infect humans, it will spread through coughs and sneezes. If you want to stay free of flu and someone coughs or sneezes at you, what should you do? First, keep your hands away from your face and wash them and your face as soon as you can. If a cough or a sneeze spray misses your face and you accidentally touch a droplet with your hands and then touch your face, the flu or cold bug could creep into your system. Which of the following statements is true according to the passage? A) Bird flu is the most dangerous disease. B) Normal flu can be easily changed into Bird flu. C) We don't need to worry about flu virus. D) The person who has normal flu and comes into contact with bird flu can easily get Bird flu.
D

Sayings  are quite common in spoken English. We don't normally put them in a composition or a letter. Sometimes it is helpful if you know what common proverbs mean. Here are a few examples. " Once bitten, twice shy." If a dog bites me, I shall be twice as careful in future when I see it. This proverb is also used to apply to many things and not only to dogs. For example, if you have been cheated at a shop, you will not go to the same shop again. "A bird in the hand is worth two in the bush." If I am a hunter, trying to catch birds, it is better to catch one than to see two birds in a bush but not able to catch them. Thus this means that what you have already got is better than the chance of being able to get something bigger in future. " Don't be a dog in a manger " means " Don't be selfish." In a stable  ,the manger is the place where the horse's food is put. Sometimes a dog will sleep in the manger and bark when a horse comes to get its food. The dog doesn't want to eat the horse's food in the manger but it will not let the horse eat it. " He who pays the piper calls the tune  ." A piper is a musician. The man who pays a musician can say what tunes the man will play. Thus this means that if a man provides the money for a plan, he can say how it will be carried out. "To pour oil on troubled waters" is to try to calm things down. Oil is lighter than water. If a ship is in trouble at sea, another ship may come to help it. The second ship can send small boats to rescue people. However, it may first pour oil on the sea to make the sea less rough. Mr Wang paid for a new school. Some people didn't like the design of the school but they didn't argue with Mr Wang because   _  . A) he was sitting on the fence B) once bitten, twice shy C) he who pays the piper calls the tune D) a bird in the hand is worth two in the bush
C

We Chat, the Chinese social media smartphone app, saw an increase in user numbers of 41 per cent year on year to 500m at the end of 2014, in a sign that parent company Tencent is extending  its reach for the mobile internet. Revenue grew 24 per cent to Rmb20.98billion, slightly higher than forecasts, driven mainly by online gaming revenues. It is unclear how much WeChat contributed to Tencent's revenues but the app's growth is a strong indicator of the company's long-term health as it tries to adjust its business to be more suitable for mobile devices. "We extended our leadership in games and online media, and made breakthroughs in emerging platforms such as online security . . . and mobile payments," Ma Huateng, Tencent chairman, said in a statement. WeChat is the second highest ranked app in China, behind QQ, Tencent's other chatting app, which claimed to have 815m registered monthly users at the end of 2014. However, that figure is more than the total number of internet users in China, which the government puts at 640million. Tencent has been unwilling to earn money through WeChat by flooding it with advertising, which could reduce efforts to increase the user base. But this is expected to change. Some analysts predicted that advertising would be introduced on later this year. Early attempts to test ads on the service have not always gone smoothly. After a BMW ad was introduced on some users' feeds in January, many users complained of "discrimination" by Tencent's data mining algorithm. They said it unfairly considered them as not wealthy or successful enough to view the sought-after BMW ad. What is the main driving force of the Tencent's income growth? A) QQ B) WeChat C) Online gaming D) Advertisments

C