Ques: Read the article and select the best answer. Article: Did you hear of the supercomputer? Recently, China's Tianhe-1 was ranked as the world's fastest supercomputer, according to a new list of world's TOP 500 supercomputers. It took 200 Chinese scientists two years to build the fastest supercomputer. It can do 2,507 trillion calculations in a second! That means it will take a personal computer 600 years to finish the work that a supercomputer does in a day! The US now leads the world in the area of supercomputers. It is home to more than half of the world's top 500 supercomputers. Japan also has advanced technology. China is developing its supercomputer technology quickly. But experts say it will take years before China's total computing power can catch up with that of the US. Supercomputers can work on many different things. They can solve problems in areas like national defense , energy and science. In business, you can also use supercomputers. Oil companies use them to find oil and gas. Banks use them for quick trades. Food companies even use supercomputers to make sure that they put potato chips into cans without breaking them. To make a supercomputer, scientists first need to link thousands of small computers together. Then they use software to turn them into one supercomputer. In fact, any person with enough knowledge about computers can make a supercomputer. But you need the top technology to make a supercomputer run fast. Question: Among the world's top 500 supercomputers, _ of them are made in the US. Options: A: less than 20% B: more than 50% C: less than 50% D: more than 20%
Ans: B

Ques: Read the article and select the best answer. Article: There was once a young mouse that lived in a hole in a wall. One day, the young mouse woke up from his sleep and looked out of the hole. As he looked out, a fantastic smell came to his nose. "Cheese!" the mouse said happily to himself. "I'll go and get it now and have it for breakfast." But then he remembered his parents' words. His parents were very clever mice and often said to their son, "Always wait before you go for a piece of cheese." So the young mouse waited quietly. Then he heard a quiet "Miaow" and he knew the cat was there. He stayed in the hole and said to himself, "I'm glad I listened to my parents and learned to wait." The next day, he looked out again. He put his nose out of the hole, and the beautiful smell of cheese came to his nose again. He could see the cheese. It was only a few centimetres away. But he sat still and waited quietly. This time he did not hear any cat's noise. Instead he heard a very quiet "Woof, woof." "It's a dog!" he thought. "If the dog is there, the cat won't be there. I expect the dog has chased the cat away, so I'm safe." The mouse ran out of the hole and started eating the cheese. He did not see the cat, which caught him and ate him. When the cat finished her meal, she said to herself, "I'm glad I listened to my parents and learned a second language." Question: How did the young mouse know the cat was there? Options: A: He heard the cat. B: He saw the cat. C: He smelt the cat. D: He knew the cat.
Ans: A

Ques: Read the article and select the best answer. Article: When we can see well, we do not think about our eyes often: It is only when we cannot see perfectly that we come to see how important our eyes are. People who are nearsighted can only see things that are very close to their eyes. Many people who do a lot of close work, such as writing and reading, become nearsighted. Then they have to wear glasses in order to see distant things clearly. People who are farsighted face just the opposite problem. They can see things that are far away, but they have difficulty reading a book if they don't hold it at arm's length. If they want to do much reading, they must get glasses too. Other people do not see clearly because their eyes are not exactly the right shape. This, too, can be corrected by glasses. Some people's eyes become cloudy because of cataracts . Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them. When night falls, colors become fainter to the eyes and finally disappear. After your eyes have grown used to the dark, you can see better if you use the side of your eyes rather than the centers. Sometimes, after dark, you see a small thing to one side of you. It seems to disappear if you turn your head in its direction. This is because when you turn your head, you are looking at the thing too directly. Men on guard duty sometimes think they see something moving to one side of them. When they turn to look straight at it, they cannot see it anymore, and they believe they were mistaken. However, this mistake happens because the center of the eye, which is very sensitive in daylight, is not as sensitive as the sides of the eye after dark, Question: People who are farsighted _ . Options: A: cannot do a lot of close work without glasses B: can only see things that are very close to their eyes C: have the same problem as the nearsighted people D: have difficulty reading a book if they hold it at arm's length
Ans: A

Ques: Read the article and select the best answer. Article: American football In almost every big university in the USA, football is a favourite sport. American football is not like soccer. Players sometimes kick the ball, but they also throw the ball and run with it. They try to take it to the other end of the field. They have four chances to move the ball ten yards. They can carry it or throw it If they move it to the end of the field, they win six points. This is called a touchdown. It is difficult to move the ball. Eleven men on the team try to stop the man with the ball. If the man does not move the ball ten yards, his team kicks the ball to the other team.Each university wants its team win. Thousands of people come to watch. They all yell (,)for their favourite team. Young men and women from the cheer Team dance and jump while they yell.Each team plays ten or eleven games each season. The season begins in September and ends in November. If a team is very good, it may play another game after the season ends. The best team plays again on January 1st,the first day of the New Year. Many people go to see these games and many others watch them on television. Question: .Each university will have _ to help them win the game. Options: A: thousands of people B: a cheer team C: a favourite team D: a good player
Ans:
B