单选题About 70 million Americans are trying to lose weight. That is almost 1 out every 3 people in the United States. Some people go on diets. This means they eat less of certain foods, especially fats and sugars. Other people exercise with special equipment, take diet pills, or even have surgery. Losing weight is hard work, and it can also cost a lot of money. So why do so many people in the United States want to lose weight? Many people in the United States worry about not looking young and attractive. For many people, looking good also means being thin. Other people worry about their health. Many doctors say being overweight is not healthy. But are Americans really fat? Almost 30 million Americans weigh at least 20 percent more than their ideal weight. In fact, the United States is the most overweight country in the world. "The stored fat of adult Americans weighs 2.3 trillion pounds," says University of Massachusetts anthropologist(人类学家) George Armelagos. He says burning off that stored energy would produce enough power for 900,000 cars to go 12,000 miles. Losing weight is hard work, but most people want to find a fast and easy way to take off fat. Bookstores sell lots of diet books. These books tell readers how to lose weight. Each year, dozens of new books like these are written. Each one boasts to help people to get rid of fat.

单选题I didn"t ______ you carrying a box when you came in.

单选题It is necessary that we ______ reading aloud every day. A. practices B. practice C. will practice D. are practicing

单选题I"m not surprised that he became a writer. Even as a child he had a imagination.

单选题______ some students are able to find employment after graduation, others will have to return to school and earn an advanced degree.

单选题______ outside the room, wet clothes get dry very easily.

单选题It was ______ that we felt tired when we arrived. A. a so long travel B. such a long travel C. such a long journey D. a so long journey

单选题The lazy student told his parents a lie ______ they had no class that afternoon.

单选题Having finished the letter, she ______ it carefully and put it into the envelop.

单选题Let them take care of their children ______ of the children taking care of them.

单选题Many young people want to become pop-stars. It is their great ambition of life. They think: pop-stars earn a lot of money; they lead interesting and exciting lives; thousands of fans admire them; they become famous...! Yes, but first they must become stars. Most stars start life with a group. But there are many groups and the competition is hard. Groups appear and disappear almost overnight. Only a small number survive. Almost without exception they have to work very hard before they reach the top. And very few reach the top—and stay there. In England there are perhaps thirty or so groups at the top. Most of these do not earn so much money: perhaps 500 pounds each time they perform. What"s more, they have quite a lot of expenses. They have to pay a manager, for example. He is the key person in their lives and he takes about 20% of their earnings--perhaps more. Then there are their clothes, their instruments and their van. And don"t forget, they have to travel a great deal—sometimes 2,000 miles in one week. At times they even sleep in their van instead of a hotel, just to save money. So now, what do you think? Are pop-stars so rich? And do they have such exciting lives?

单选题I don"t have any ______ plan for the weekend—I was thinking of spending some time with my family or perhaps getting together with some friends.

单选题The bus ______ before we reached the station.

单选题Since he joined the troops, Tom ______ to do a good deed every day. A. tries B. has tried C. has been tried D. tried

单选题The drug industry says its products are safe and ______ for children.

单选题I"d buy ______ so as to fill all these in.

单选题Honestly, the story of his childhood hardly ______ true to us. A. looks B. remains C. sounds D. becomes

单选题Physics ______ always my strong point. A. is B. are C. being D. to be

单选题The revolutionary government acts on ______ of the masses and against the privileged few.

单选题His description of the ghost was so ______ that his little daughter screamed when he came to the part of killing.