What's the strongest part of your body? Your head? Bones? It's your teeth. There is a special thing called enamel in teeth. It is the hardest thing in the human body and keeps bacteria away. However, teeth are hurt easily to problems and disease. September 20 is National Teeth-loving Day in China. Let's pay attention to the health of our teeth. Teeth problems are common around the world. Most children and young adults have tooth decay . A study which come out on China Health Monthly magazine this year showed that 40.74% of a sample of 1,306 Chinese students under age 15 has decayed teeth. Food that is rich in sugar increases the risk of tooth decay. After you eat, bacteria go crazy over the sugar on your teeth. The bacteria turn sugar into acids that eat away at tooth enamel. This causes holes in your teeth. Another common problem is crooked teeth . When your new teeth begin to grow and the old teeth haven't fallen out, there isn't enough space for the new ones. This causes crooked teeth. Don't worry. Here are some ways to keep your teeth healthy. *Brush at least twice a day in the morning and in the evening. *Learn to use dental floss . The floss gets rid of food that's hidden where your toothbrush can't get it. *Visit a dentist. He or she can check if you have any dental problems and help you clean your teeth. *Pay attention to what you eat. It's better to eat lots of fruit and vegetables instead of fries and drink water instead of soda. *Wear braces  to make your teeth straight and beautiful. What's the strongest part in the human body according to the passage? A) Bones. B) Teeth. C) Head. D) Bactria.
B
A woman is having some trouble with her eyes, so she goes to see the doctor. He is a new doctor and doesn't know her, so he asks some questions and one of them is, "How old are you?"The woman says, "I don't know, doctor, but let me think about it." She thinks for a minute and then says, "Yes, I know now, Doctor!When I marry , I am eighteen years old, and my husband is thirty. Now my husband is sixty. And that is twice thirty. So I am twice eighteen. That's thirty-six, isn't it?" The woman is  _  years old now. A) eighteen B) thirty C) thirty-six D) forty-eight
D
Q: Mr Smith gave his wife money every Friday evening. His wife always spent it all the next Wednesday, so that for the next three days she had no money to spend at all. One day Mr Smith asked her," But how did you spend all that money?" She answered, "I don't know . "So one Friday evening, Mr Smith gave her money together with an exercise book and a pencil. He said to his wife ,"Please write down how you spend the money . "Next Tuesday, his wife had no money again. Mr Smith took the exercise book to see how she had spent it. "I have done what you told me ,"she said gladly. She had written "Friday, I got 18 pounds from Mr Smith. "on the first page, and on the second page, she wrote ,"Tuesday, I have spent it all. " Mrs Smith was   _   to do what Mr Smith asked her to . A) happy B) sad C) sorry D) excited
A: B
Question: The day is like any other day in his life. Tom walks past the shop at the street corner. He stops to look at the front row of shoes, and he feels happy to see that pair of shoes he wants very much is still  there. But he feels sorry for himself. He really wants to have them for his birthday. He sadly walks away and thinks how to tell his mother about it. He knows she will give him anything he likes if she can. He also knows very well that she has little money. He decides not to go home so quickly, because he looks worried and his mother will see it. So he goes to the park and sits on the grass. Then he sees a boy in a wheel chair. He notices  that the boy moves the wheel chair  with his hands. Tom looks at him carefully and is surprised to see the boy has no feet. He looks at his own feet. "It's much better to be without shoes than without feet," he thinks. He smiles and he is happier. From the story we can know that Tom   _  . A) loves his mother very much B) doesn't want to stay at home C) doesn't want to go to school D) likes new shoes very much
Answer: A
*Question*
You may know about " junk food" like French fries. But do you know about "junk sleep"? Recently, a British survey found that electronic  products in teenagers bedrooms are affecting their sleep. The survey was done among 1,000 British kids from 12 to 16. It found that thirty percent of them got just 4 to 7 hours sleep every day. But doctors say they need 8 to 9 hours. Almost a quarter of the kids said they fell asleep more than once a week while watching TV, listening to music or using other electronic products. "This is very worrying." Said Dr Chris Idzikowski, a British expert, "We call it 'junk sleep', It means you don't get enough sleep and the quality of the sleep is bad, too. If you don't get good rest, you don't perform well in school the next day." The survey found that 40 percent of the kids felt tired each day, with girls between 13 and 16 feeling the worst. Nearly all the teenagers have a phone, Mp4 or TV IN THEIR BEDROOM. And many of them have all three. _  of the children in the survey sleep only 4 to 7 hours a day. A) 200 B) 300 C) 500 D) 1,000
**Answer**
B
The idea of what shaking the head means is not always the same in different countries. Maybe some visitors would be surprised when they first come to India. When they talk to an Indian, they would find he would often shake his head. The visitors might think that the Indian doesn't like what they say. But in fact, they would be completely wrong. Indians always shake their heads when they talk to others. It doesn't mean "No". If someone wants to visit India, he should know this, or he will be in trouble. One day, a foreign officer went to India on business. He hired a car and asked an Indian to drive him. When he told his driver to take him to his office, the Indian shook his head at once. The officer said again and the driver shook his head again. At last the officer, of course, got angry. "How dare you refuse my order?" he shouted, "Drive me to my office at once!" The driver answered in quite a loud voice, too. "Yes, sir!" But to the officer's surprise, the driver shook his head at the same time. The car started and the foreign officer was now too surprised to say a word. He thought about it for a while, and then he nodded with a smile, "'No' means 'Yes' here!" What does shaking one's head mean all over the world? A) Yes. B) No. C) Glad. D) Yes or No.

D