[单项选择]Conventional computer models of the atmosphere fails to predict such a short- lived tornado because ______.


A. the computer is not used to forecast specific local events
B. the computers are not advanced enough to predict it
C. the weather data people collect are often wrong.
D. weather conditions in some small regions are not available

[单项选择]Apple sells its new computer models at a high price because ______.


A. they have new features and functions
B. they are more sophisticated than other models
C. they have new accessories attached
D. it wants to accumulate funds for future research

[单项选择]

Conventional wisdom about conflict seems pretty much cut and dried. Too little conflict breeds apathy (冷漠) and stagnation (呆滞). Too much conflict leads to divisiveness (分裂) and hostility. Moderate levels of conflict, however, can spark creativity and motivate people in a healthy and competitive way.
Recent research by Professor Charles R. Schwenk, however, suggests that the optimal level of conflict may be more complex to determine than these simple generalizations. He studied perceptions of conflict among a sample of executives. Some of the executives worked for profit seeking organizations and others for not-for-profit organizations.
Somewhat surprisingly, Schwenk found that opinions about conflict varied systematically as a function of the type of organization. Specially, managers in not-for-profit organizations strongly believed that conflict was beneficial to their organizations and that it promoted higher quality decision making than might be achieved in the
A. the advantages and disadvantages of conflict
B. the real value of conflict
C. the difficulty in determining the optimal level of conflict
D. the complexity of defining the roles of conflict

[单项选择]Pleasant working atmosphere not only impresses foreign experts but also motivates each staff member to work enthusiastically and creatively（）
A. 宜人的气候不仅使外国专家深有感触，同时也使每一位工作人员心情开朗，生机勃勃。
B. 和谐的工作氛围不仅使外国专家颇有感受，也带动每一位参谋部的成员们热情奔放地工作。
C. 让人感到轻松愉快的工作气氛不仅给外国专家留下深刻印象，也促使每个员工去积极地创新。
D. 愉快的工作氛围不仅让外国专家们感受深刻，也推动每个员工热情工作，为集体出谋划策。

[单项选择]Typing a manuscript in the conventional manner may make a writer ______.


A. take fewer risks
B. make more mistakes
C. become overcritical of his or her work
D. have a lot of second thoughts

[单项选择]From the passage we understand that conventional plant breeding produced ______.


A. a potato-tomato hybrid
B. new plant technology
C. self fertilizing
D. less dramatic results than the new technology

[单项选择]Speaking of Disraeli, a conventional professor would probably have ______.


A. focused on his accomplishments as a statesman
B. talked about his family life
C. explored the little-known aspects of the person
D. looked at him from a fresh perspective

[单项选择]Why will battery buses cost less than conventional buses in the long run


A. They will spread the capital cost over a long period.
B. They will be stronger and last longer.
C. They will use less fuel and cost less to maintain.
D. They will be charged at night when electricity costs less.