单选题The professor could hardly find sufficient grounds ___________ his arguments in favour of the new theory.

单选题Having failed to pass the final examination, he felt very______.

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单选题The shop-assistant was straight with his customers. If an article was of______ quality he'd tell them so.

单选题The researchers sought to determine if rest periods would reduce worker __________ and therefore contribute to increased output across the day.

单选题During the past 30 years or so, television has become a major agent of socialization(社交), often competing with parents and teachers. It occupies more of the working hours of American children, and so it is called "a member of the family". School age children watch television between seventeen and thirty hours a week. For preschool children it is often as high as fifty-four hours a week. By the time the youngster graduates from high school, he or she will have spentroughly 11,000 hours in school compared to more than 22,000 hours in front of television. Children are not just watching children's programs. On the contrary, the largest part of their viewing takes place between 8 and 11 p.m. Monday throughSaturday and between? and 11 p.m. on Sunday. However, 60% of mothers said they placed no "restrictions" on the amount oftime; they permitted their children to watch television. Teachers and parents have become increasingly concerned about the effects of television on school performance. Many teachers have reported more and more incidences(发生) of fatigues, tension, and bad behaviors. To minimize the harmful effects of television, parents and teachers at Kimberton Farms School in Phoenixville, Pennsylvania, have been following written guidelines for five years which include no television at all for children through the firstgrade. Children in second grade through high school are encouraged to watch notelevision on school nights and limit viewing to a total of three to four hours onweekends. As many parents reported, the result was obvious. Three days after theyturned off the sets, the children could concentrate better, and were more able tofollow directions and get along with their neighbors. Recently, the National ParentTeacher Association has been working hard in offering advice on choosing programs, setting time limitations, and helping parents and children develop critical attitudes.

单选题As an actor he could communicate a whole ______of emotions. A. frame B. range C. number D. scale

单选题Questions 23 to 25 are based on the passage you have just heard.

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单选题When we think of entrepreneurs, most of us imagine (67) , successful, over-achievers like Bill Gates of Microsoft, Richard Branson of Virgin Airlines, Inc. or Jim Boyle of Columbia Sportswear, to (68) a few contemporary heroes. The (69) is that we often fail to (70) entrepreneurs all around us. the corner grocery store owner, the family (71) who opens a medical (72) in our neighborhood, or the young person who (73) the morning paper. (74) is creating business opportunities (75) entrepreneurship, although the (76) of entrepreneurship would be markedly different from each other. According to Jeffery Timmons, author of "New Venture Creation", there are three (77) components for a successful new (78) : the opportunity, the entrepreneur, and the (79) needed to start the company and make it grow. The opportunity is the (80) for a new business. The entrepreneur is the person who develops the idea for a (81) into a business. Resources include money, people and skill. In this part, we (82) on entrepreneurs, one of the critical (83) for success of a new business. Who are they? What makes them (84) ? One factor which (85) Bill Gates from the morning paper deliverer is the level of business success each desires to achieve. Determining (86) success means to you is a crucial element in the early stages of new venture planning.

单选题No matter how______ a hill may be, it is not necessarily worthless.

单选题The purpose of the latest recycling project is______.

单选题A) it C) anythingB) them D) something