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.

单选题 国画(Chinese painting)是世界上最古老的艺术传统之一。绘画时用毛笔蘸黑墨或彩墨在纸张或丝绸上作画。根据表现手法，国画可分为写意派(the Xieyi school)和工笔派(the Gongbi school)两大类。写意派以自由表达和形式夸张为特点；工笔派则注重以精细的笔法描绘细节。山水画被公认为国画的最高形式。纵观历史。不同时期的国画都相应地反映出人们的社会意识。

单选题Pupils often want to sit next to their particular friend and many classroom activities involve moving about, but even relatively small alterations can make ______ to the visual comfort of pupils with sight defects.

单选题 Questions10-12 are based on the passage you have just heard.

单选题The houses built of brick last longer than______built of wood.

单选题I'll be working ______ tomorrow.

单选题I'd rather you ______ that.

单选题COIN: DENOMINATION

单选题The economic forces which may affect the new public offering of stock include sudden downturns in the market, hedging and other investor strategies for preventing losses, ______the interest rates in Washington, and ______undercapitalized.