单选题We supply different telephone communication products, some of ________ are particularly useful for small businesses.

单选题He ______ very quickly after his illness. A. recovered B. discovered C. uncovered D. covered

单选题Speaker A : Thank you so much for the wonderful dinner. Tom and I really enjoyed it.Speaker B: ______ A. I'm glad you made it. B. You're quite welcome. C. I like to share with others. D. You're always my best friends.

单选题The children glanced ______ at the box of candy they were told not to touch. A. eminently B. covertly C. excessively D. graciously

单选题The factory has produced ten thousand color TV sets this year, as ______ eight thousand last year.

单选题Sometimes very young children have trouble ______ fact from fiction and may believe that such things actually exist.

单选题Recent research into aging suggests that the body's defense mechanisms may lose the ability to distinguish what is {{U}}alien{{/U}}.

单选题Black FridayEveryone likes to shop for gifts for the holiday season, but few people know the history of holiday shopping. While people have heard of Black Friday; most do not know its origins. Black F

单选题After September 11th, long delays of express air shipping often arise because of

单选题 西部大开发(western development campaign)是中国政府的一项政策，于2000年开始运作。目的是提高西部地区的经济和社会发展水平。西部大开发的范围是中国西部的12个省和自治区(autonomous region)。西部地区自然资源丰富，市场潜力大，战略位置重要。但由于自然、历史、社会等原因，西部地区经济发展相对东部落后。这一政策的实施可以使西部地区得到更快、更深、更广的发展，实现共同富裕(common prosperity)。

单选题The pursuit of maximum profit often drives manufacturers to Uturn out/U things that can do harm to people’s health.

单选题At the first sight the planet Mars does not appear very welcome to any kind of life. It has very little oxygen and water, the temperature at night is below 50℃ and winds of 100 miles per hour cause severe dust storms. However, the surface of the planet seems to show that water flowed across it some time in the past, and it is believed that there is enough ice at the poles to cover the planet with water if it melts. Although there is no life on the Mars now, some scientists think that there may have been some form of life long time ago. At that time, the planet had active volcanoes; the atmosphere was thicker and warmer; and there was water. In fact, in some ways the Mars may have been similar to the Earth, where life exists. Some people believe that the Mars could support life in the future if the right conditions were produced. The first step would be to warm the planet using certain gases which trap the Sun"s heat in the planet"s atmosphere. With warmth, water and carbon dioxide(二氧化碳), simple plants could begin to grow. These plants could slowly make the Mars more suitable for living. It is estimated that the whole process might take between 100,000 and 200,000 years. In the meantime, people could begin to live on the planet in special closed environments. They would provide a lot of useful information about conditions on the Mars and the problems connected with living there.

单选题Concerning health-care systems in Britain, the author is likely to agree to the statement that

单选题The book is borrowed from the library, so you ______ your children put dots and lines here and there.

单选题 Directions: For this part, you are allowed 30 minutes to write an essay on honesty by referring to the saying 'A liar is not believed when he speaks the truth.' You can cite examples to illustrate your point. You should write at least 150 words but no more than 200 words.

单选题The tallest building in Americas capital city is the Washington Monument纪念碑． It is 21 for George Washington , the first president of the United States． He 22 the American colonies殖民地 in the War o

单选题When workers are organized in trade unions, employers find it hard to lay them ______.

单选题There are more than fifty proposals ______ at the conference.