Page 2 / 4

2. Scientists studied more than 500kids who play tennis. Most of the kids  began playing the sport around age 6.  They practice for 16 to 20 hours each  week. The scientists found that the  kids who play more than one kind of  sport are less likely to be injured. To  be injured is to be hurt.

Page 3 / 4

3. Why is playing more than one sport  good for you? Each sport uses  different muscle groups. Playing only  one sport can put too much strain on  the same muscle groups. Strain is the  overuse of a body part. If you play  tennis, you swing a tennis racket. That  puts a lot of strain on your arm. If you  switch to soccer, you give your arm a  rest.作业

Page 4 / 4

4. The study was led by Dr. Neeru  Jayanthi of Loyola University's Stritch  School of Medicine. He gives this  advice to kids:“Play lots of different  types of sports to make sure you have  fun. It might make it less likely that  you'd get hurt.

4. What does the underlined word  “strain”mean in Chinese?

Page 2 / 9

2. What wrong about overeating?  “Taking in half the food that yourstomach can contain is enough for you  to survive. Eating too much places a  burden on your organs and causes  many health problems,”heath  education expert Hong Shaoguang  said.作业

Page 3 / 9

3. Health risks:作业

Page 4 / 9

4. Obesity: Countless scientific  studies have proved that obesity  causes heart disease, hypertension,  diabetes, arteriosclerosis and other  complications.作业

Page 5 / 9

5. Gastropathy: Overeating can cause  severe indigestion even damage the  gastrointestinal tract.作业

Page 6 / 9

6. Fatigue: Overeating slows brain  reactions and accelerates the brain's  aging process.作业

Page 7 / 9

7. Cancer: Japanese scientists have  found that overeating can switch off a  gene that combats cancer.作业

Page 8 / 9

8. Dementia: Japanese experts have  found that 30 to 40 percent of senile  dementia patients overate when they  were younger.作业

Page 9 / 9

9. Osteoporosis: Regular overeating  decalcifies bones and increases the  risk of Osteoporosis (brittle bone  disease)

4. What we can learn from the passage?

Page 2 / 3

2. The game was played in India  during the 18th Century, at which time  it was called "Poona" . In the 1860s it  was adopted by British Army officers  stationed in India. The officers took  the game back to England, where it  became a success at a party given by  the duke in 1873 at his house called  "Badminton" in England.作业

Page 3 / 3

3. A change of Badminton which has  been developed only recently, Speed  Badminton or Speedminton, is played  without a net, and It's becoming more  and more popular, especially in  Germany.

Page 2 / 3

2. The violin has a body made of  wood. The body is empty on the  inside. The violin also has a neck.  Strings are attached to its neck.  People make music with the violin by  moving a bow across the strings. They  also press down on the strings to make  different sounds.作业

Page 3 / 3

3. To play the violin, use one hand to  hold it between your chin and shoulder.  Use your other hand to move  the bow across the strings. Press  down on the strings at different points  on the neck. As you do so, you'll hear  the violin make different sounds. Are  you ready to give it a try?