input: OPTIONS:
- Because of the story about the apple tree.
- Because of the long history of the apple tree.
- Because of the sweetness of the apple.
- Because of the unusual flower of the apple tree. Now, answer this question: Read the following article and answer the question. Article: Legend has it that an apple which fell from its branches was the inspiration for Sir Isaac Newton's discovery of gravity . But now history's famous fruit tree is paying the price of fame. The thousands of visitors drawn to Sir Isaac's childhood home each year could be damaging the tree. A willow barrier has been put around the tree. It means visitors to the 17thcentury Woolsthorpe Manor, near Grantham, Lincolnshire, will no longer be able to sit under its branches as Newton was said to have been doing in 1665 when "the notion of gravitation came to mind." The National Trust, which owns the small manor where Newton was born in 1642, said the 2ft-high barrier was designed to _ the tree. Official Ann Moynihan said there had been no damage so far but warned that there could soon be a problem."Visitor numbers have gone up by around 50 percent, to 33,000 a year in three years. The more people who visit, the more the earth will become compacted around the tree and over the roots. We just want to _ the tree for another 400 years if we can."She said visitors will still be able to take apples from the tree. Visitor Chris Gwyther,37,said,"I suppose it is a pity that you can't sit under the tree like Newton. But you can still see it and the tree is 400 years old, it needs saving for the future." Newton left no information saying he had been inspired by a falling apple. The story appeared in a book by French philosopher Voltaire published in 1727, the year Newton died at the age of 84. Question: Why do people go to Woolsthorpe Manor to see the apple tree? Answer:
A:
output: Because of the story about the apple tree.

Read the following article and answer the question. Article: Deserts do not stay the same size .Sometimes they grow bigger. Sometimes they get smaller. The world's biggest desert, Sahara, is in Africa. Right now, the Sahara desert is growing fast. Why is the Sahara growing ? In some places , People farm too much. In other places ,animals eat all the grass. or people cut down the trees. This makes the soil weak. Weak soil lets the desert grow. Why is it a problem? people can not grow food in the desert. people can not build houses, hospitals , or schools in the desert . so people must leave their homes .They must live somewhere else. What can people do ? They can plant trees. They can also farm less. These things make soil stronger. maybe the Sahara will stop growing . It's a big problem. Many people must work together to solve it? Question: What is the main idea ? Answer:

OPTIONS:
- The Sahara Desert is in Africa .
- Farming too much makes the soil weak.
- Big problem are caused by the growing Sahara desert.
- Planting trees will help the world.

Answer: Planting trees will help the world.

Problem: OPTIONS:
- 9.
- 10.
- 30.
- 70.
Q: Read the following article and answer the question. Article: Six days before the 63rd birthday of New China, our country received a great gift. The country's first aircraft carrier , Liaoning, has made China become the l0th country in the world to have an aircraft camer. An aircraft carrier is a kind of ship that planes can fly from and land on--like an airport on the sea. It stands for a country's military strength . It plays an important role in modern wars. In August last year, the air craft carrier began its trial run at Dalian Port in Liaoning. The carrier was at first called the Varyag. It was built in the former Soviet Union. However, the Soviets failed to finish the ship. China bought the Varyag in 1998. Now after 10 trial runs, the aircraft carrier, renamed Liaoning, is in active service. Liaoning is about 300 meters long and 70 meters wide. It can take 30 planes and hold 2,000 soldiers. According to Xinhua News, Liaoning will be used for scientific research and military training. The aircraft carrier will help protect our country and promote world peace. The BBC said that Liaoning coming into service " marks China as a rising power". ,. Question: How many countries in the world had had aircraft carriers before China did? Answer:
Answer: 9.

Problem:OPTIONS:
- Because time is expensive.
- Because time will get back.
- Because we are too poor.
- Because time never returns.

Read the following article and answer the question. Article: Think of life as a game in which you are playing with five balls in the air. You name them work, family, health, friends and spirit and you keep all of them in the air. You will soon understand that work is a rubber ball. If you drop it, it will bounce( )back. But the other four balls, family, health, friends and spirit, are made of glass. If you drop one of these, they will be broken. They will never be the same. You must understand that and try to have balance in your life. How? Don't look down on your worth by comparing yourself with others. It is because we are different and each of us is special. Don't let other people set goals for you. Only you know what is best to yourself. Don't give up when you still have something to give. _ Don't be afraid of difficulties. Be brave! Don't run through life so fast that you forget not only where you have been, but also where you are going. Don't be afraid to learn. Knowledge is a treasure you can always carry easily. Don't use time or words carelessly. You can't get them back. Yesterday is history, tomorrow is mystery , and today is a gift; that's why we call it " the present". Life is not a competition, but a trip ,step by step. Question: Why can't we use time carelessly? Answer:
****
A: Because time never returns.

Read the following article and answer the question. Article: There is an old English saying.It tells us that we must go to bed early and get up early in the morning.Then we shall be healthy.We shall also be rich and clever.This is true.The body must have enough sleep to be healthy.Children of young age should have ten hours' sleep every night.Children who do not have enough sleep cannot do their work well and they may not be healthy.The body also needs exercise.Walking, running, jumping and playing games are all exercise.Exercise keeps the body strong.Exercise also helps the blood to move around inside the body.It is very important.Our blood moves to all parts of our body.The head also needs blood.Exercise helps us to think better. Question: Children of young age should have _ hours' sleep every day. Answer:
OPTIONS:
- ten
- nine
- eleven
- twelve

Answer:
ten