Problem:OPTIONS:
- finding out more about El Nino
- being careful during the floods
- driving cars
- stopping the greenhouse effect

Read the following article and answer the question. Article: In the 1500s, South American fishermen said that the sea became warmer every few years. They gave this special event a Spanish name 'El Nino', meaning 'the baby'. It is called 'the baby' because it arrives around Christmas. El Nino is a huge area of warm water in the middle of cold water in the Pacific Ocean. It happens every two to seven years. It moves around the ocean and becomes bigger and smaller at different times. This warm water affects the weather. It is always raining over El Nino. El Nino contains a lot of energy. Scientists think this energy is formed when wind comes from the northern half of the world. The winds blow across warm sea water in the south. When the strong wind hits the warm water, violent weather happens. Scientists think that El Nino existed for many thousands of years. El Nino affects every person in the world because it affects the entire world's weather. It can bring the rain that farmers need. It can bring storms that destroy homes. It can mean that fishermen cannot catch fish, and it can bring floods. There is nothing we can do about El Nino. It is an event of nature. We can help the world's weather by trying to stop the greenhouse effect and air pollution. The most important job for scientists is to learn how to predict when El Nino is going to bring dangerous weather. Then, people can try to prepare for storms, floods and droughts. New technology like satellite pictures and temperature measuring equipment can help. Still, it is very hard to say when or where El Nino will cause damage. Question: We can help the world's weather by _ . Answer:
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A: stopping the greenhouse effect

Problem:OPTIONS:
- Meanings of different unlucky numbers.
- Meaning of different lucky numbers.
- Lucky or unlucky numbers in Western culture.
- Lucky or unlucky numbers in Chinese culture.

Read the following article and answer the question. Article: Do you have a lucky number? What is it? Many people have a special number that they hope will bring them good luck. In Chinese culture, some numbers are believed to be lucky or unlucky based on the Chinese word that the number sounds similar to. For example, the word for the number 8 sounds similar to the word for "making a fortune ". So, people consider it a very lucky number. Some people will even spend a lot of money to have 8s in their phone numbers or vehicle license plate numbers. The opening ceremony of the Beijing Olympics began at 8:08 p.m. on August 8, 2008. The number 9 is also a lucky number because of its connection to the emperors of China. There were nine dragons on emperors' robes and Chinese myth held that the dragon has nine children. The number 9 also stands for "long lasting". That's why a man always proposes to(---)a woman with 99 or 999 roses. So what's a "bad luck" number in China? It might be 4. Many Chinese people see 4 as a "bad luck" number because it sounds similar to the character for "death". Because of this, many buildings skip the fourth floor, and simply call it the fifth floor. In Hong Kong, some buildings even skip all floors numbered with 4, such as, 4, 14, 24, 34 and all 40-49 floors. Some buildings also skip the 13th floor, as this is considered an unlucky number in many Christian countries. As a result, a building whose highest floor is 50 may have only 35 physical floors. Question: What does this passage mainly talk about? Answer:
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A: Lucky or unlucky numbers in Chinese culture.

Problem:OPTIONS:
- he couldn't pay
- he had not enough money
- he didn't think it necessary
- he had just cleaned his shoes

Read the following article and answer the question. Article: A boy who was cleaning shoes in the street said to a young man passing by, "Let me clean your shoes." The young man said, "No, thank you." "You may pay me only a pound, sir," said the boy. But the young man refused again. Then the boy told him that he would clean his shoes for nothing. The young man agreed to this, and soon one of his shoes was shining brightly. The man put the other shoe on the boy, but the boy refused to clean it unless he was paid two pounds for his work. The young man refused to pay anything and went away. But the dirty one looked so bad that he couldn't walk away. He had to turn back and gave the boy two pounds. In a very short time his shoes shone brightly. Question: At first the young man refused to clean his shoes, because _ . Answer:
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A: he didn't think it necessary

Problem:OPTIONS:
- find jobs more easily
- study at good schools
- receive good medical care
- A, B and C

Read the following article and answer the question. Article: Beijing, Shanghai, Guangzhou and other big cities are exciting places to live. There are many interesting things to see and to do. You can go to different kinds of museums, plays and movies. You can also go to supermarkets to buy things from all over the world. But there are serious problems in big cities, too. The cost of living is high, and there are too many people in some big cities. Every year many people move to the cities because there are more chances to find jobs, to study at good schools, and to receive good medical care. But sometimes these people cannot find work or a good place to live. Also, too many people in a small space make it hard to keep the cities safe and clean. Some people enjoy living in big cities. Others do not. Before people move to big cities, they should think about the problems of living there. Question: In big cities people can _ Answer:
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A:
A, B and C