user: Read the following article and answer the question. Article: We all need to exercise. Doctors say it is good for us. It makes your heart and body strong. It also gives you more energy. And you will feel better yourself. It's best to exercise twice a week. Twenty minutes each time is enough. There are many ways to exercise. You can walk, run, play sports, or swim. Many people go to special places to exercise. They are called "fitness centers". These places have a lot of equitment. Some people buy equitment for their homes. But it is very expensive. Exercising can be fun. Friends can exercise together at fithess center. Or they can play sports together, how do you exercise? Question: Which of these sentences about exercising is true? Answer:
OPTIONS:
- Exercising is expensive.
- Exercising good for heart.
- Only doctors exercise.
- Friends never exercise together.

Answer: Exercising good for heart.


Read the following article and answer the question. Article: Can you make a telephone call? Of course you can make it in Chinese. But a call in English is quite different from one from one in Chinese. If you want to ask somebody to answer the telephone, you can not say, "Please ask Mr. XX to answer the telephone." Instead ,you must say,"May I speak to Mr. XX?" If you want to ask who is answering the phone, you should say,"Who is that?""Is that Mr. XX ( speaking)?"Instead of "Who are you?" If you want to tell the other one who you are, you should say,"This is XX (speaking)"instead of "I am XX" Question: If you want to ask someone to answer the call, you can say, "   _    ". Answer:
OPTIONS:
- May I speak to Mr. XX
- Please tell Mr. XX to answer the call.
- I want to talk to Mr. XX?
- Are you Mr. XX?

Answer: May I speak to Mr. XX


Read the following article and answer the question. Article: Have you ever wondered? 1. Why do airplanes take longer to fly west than east? It can take five hours to go west-east from New York (NY) to London but seven hours to travel east-west from   London to NY. The reason for the difference is an atmospheric phenomenon known as the jet   stream. The jet stream is a very high altitude wind which always blows from the west to the east across the Atlantic. The planes moving at a constant air speed thus go faster in the west-east direction when they are moving with the wind than in the opposite direction. 2. What would happen if the gravity on Earth was suddenly turned off? Supposing we could magically turn off gravity. Would buildings and other structures   float away? What happened would depend on how strongly the things were attached to the Earth. The Earth is moving at quite a speed, moving at over a thousand miles per hour. If you turn something around your head on a string  , it goes around in a circle until you let go of the string. Then it flies off in a straight line. 'Switching off' gravity would be like letting go of the string. Things not attached to the Earth would fly off in a straight line. People in buildings would suddenly _ upwards at a great speed until they hit the ceiling. Most things outside would fly off into space. Question: Where can we most probably read this text? Answer:
OPTIONS:
- In a research paper.
- In a short story.
- In a travel magazine.
- In a student's book.

Answer:

assistant: In a research paper.