单选题

单选题There are many factors which may have an influence on adults and children being able to lead a healthy life. Nowadays, people are very busy. Often, both parents work outside the home. Children are expected to take more responsibility at home to help their parents. They also have sporting and leisure activities as well as schools expectations. The busyness also adds another factor: the need to use ears to get from one place to another quickly. Today, society places a lot of emphasis on technology. Computers, DVDs, CDs, television, Play Stations and X-boxes have become major leisure activities, rather than traditional more active pursuits. This has led to a more sedentary lifestyle. The media provide entertainment and information. Unfortunately, they also promote fast food which fit easily into busy lifestyles. It is much more convenient at times to buy a quick takeaway rather than prepare a meal. The media constantly bombard their audience with "perfect" body images, the need to buy the most fashionable clothes, the most up-to-date computer games, the best visit places to visit and the best things to do. Environments vary. We may be exposed to pollution, such as cigarette smoke. This can be harmful to people who suffer from breathing difficulties. Environments where passive smoking is unavoidable make it difficult to lead a healthy life. The important factor influencing healthy lifestyles is motivation, or the desire to be healthy. Any person who wants to be healthy will find a way to be healthy — if he / she is motivated enough.

单选题The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.

单选题Would you mind ______ an eye on the house for us while we are away?

单选题His mother is ______ principal of the No. 6 Middle School.

单选题I know it's not important but I can't help ______ about it. A. except to think B. thinking C. think D. to think

单选题 (C) Today television is one of the most popular forms of entertainment (娱乐) in the home. Some people in places where television reception is good may think that television has taken the place of radio. Television, however, is actually a kind of radio. It uses special equipment for sending and receiving the picture. The television sound system uses the same type of equipment that is used in other forms of radio. Exchanging messages with ships at sea was one of the first uses of radio. Modem radio is still used for this purpose and for communication across oceans. On land too radio provides a means o{ instant communication even with moving vehicles (车辆) such as taxicabs or service trucks. Police forces use two-way radio to get information to and from officers in squad cars (警车) and on motorcycles. Small portable (手提式的) sets make it possible to communicate with a central exchange while walking or riding in a city or over a countryside. Observers in airplanes can report traffic accidents and traffic jams by radio to police officers on the ground. Radiotelephones are used in many places. Connection with the regular telephone service can be provided for boats, trains, and cars. Isolated places in deserts, forests, and mountainous regions are linked by radiotelephone in many parts of the world. Thus by means of radio people can communicate with others wherever service is provided.

单选题The medical team consists at first of ten, ______ of fifteen members.

单选题He felt as if he alone ______ responsible for what had happened.

单选题I had trouble understanding the French, so I got the English _______ of the book from the library and read it.

单选题Adults tend to interpret the action of children ______ their own experience.

单选题______ that I wasn"t going to get much chance for promotion, I soon became bored with my work.

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.