B. those who often sit too much are more likely to grow fat or suffer from a heart attack.

　　C. regular exercise is effective to get rid of the side effect of sitting too much.

　　D. you had better sit for more than four hours in a single bout.

　　3．How does the danger of sitting too much affect the human body?

　　A. It results in a higher death risk.

　　B. It increases glucose and fat in the body.

　　C. It makes a person unable to exercise long enough in a day.

　　D. It causes the gene to fail to balance the glucose and fat in the body.

　　4．In the opinion of Ekblom-Bak, you’d better have a rest in the office by________.

　　A. sending your friends e-mails           

　　B. having a walk around your office as often as you can.

　　C. chatting online or playing computer games 

　　D. listening to music with your head on the desk.

　　B

　　One of the best-loved American writers was William Sydney Porter, or O.Henry. From 1893 he lived with his family in a house in Austin, Texas, which is now a museum. Visitors to Austin can see the house. It was saved from destruction (破坏) and turned into a museum in1934. The museum is a good way to learn about the interesting life of the American writer.

　　William Porter rented this house in Austin and lived there with his wife Athol and daughter Margaret for about two years. Many objects in the museum belonged to the Porters. Others did not. An important piece in the room is the original photograph over here. It was taken there in the house about 1895. The piano there goes back to the 1860s. His wife took lessons on it when she first moved to Austin.

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