49.What does the passage say about corporate America in the near future?
A. More and more women will sit in the boardroom.
B. Gender imbalance in leadership is likely to change.
C. The public is undecided about whether women will make good leaders.
D. People have opposing opinions as to whether it will have more women leaders.
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48.What is the primary factor keeping women from taking top leadership positions according to the recent survey?
A. Personality traits.
B. Gender bias.
C. Family responsibilites.
D. Lack of vacancies.
47.What do we learn from previous survey findings about women seeking leadership roles?
A. They have unconquerable difficulties on their way to success.
B. They are lacking in confidence when competing with men.
C. Their failures may have something to do with family duties
D. Relatively few are hindered in their career advancement.
Questions 5 to 7 are based on the news report you have just heard.
A. He has lots of fans on Facebook.
B. He has rich experience in flying.
C. He often suffers from toothaches. D) He has learned to pull teeth from a video.
D. He has learned to pull teeth from a video.
下列说法错误的是（ ）
A. 用解析法求解平面汇交力系的平衡问题时，X和Y两轴可以不相互垂直
B. 一个力不能与一个力偶平衡
C. 力偶矩是使物体产生转动效应的度量，与矩心位置无关
D. 力矩是使物体产生转动效应的度量，与矩心位置无关
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