The prospects for women who are scientists and engineers at major research universities have improved, although women continue t

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问题     The prospects for women who are scientists and engineers at major research universities have improved, although women continue to face unfair treatment in salary and【C1】______to some other resources, a panel of the National Research Council【C2】______in a new report. In recent years "men and women faculty in science, engineering and mathematics have enjoyed comparable【C3】______." said the report. It found that women who applied for university jobs and,【C4】______they had them, for promotion and tenure (终身任职), were at least as【C5】______to succeed as men.
    In【C6】______report in the Proceedings of the National Academy of Sciences, researchers at the University of Wisconsin who【C7】______a variety of studies concluded that the achievement gap【C8】______boys and girls in mathematics performance had【C9】______to the vanishing point. Girls are【C10】______of a smaller number in the ranks of young math prodigies (神童),【C11】______. that gap is narrowing. The researchers said this and other circumstances "provide abundant evidence【C12】______the impact of social, cultural and other environmental【C13】 ______on the development of mathematical skills of different genders".
    The research council, an arm of the National Academy of Sciences, gathered its expert panel at the【C14】______of Congress. The panel【C15】______six disciplines — biology, chemistry, mathematics, civil and electrical engineering, and physics — and【C16】______its analysis on interviews with faculty members at 89 institutions and data from federal agencies, professional societies and other sources.
    The Wisconsin researchers, Janet S. Hyde and Janet E. Mertz, studied data from 10 states.【C17】______between girls’ and boys’ performance in the 10 states were "【C18】______to zero in all grades", they said. In the national【C19】______. differences between girls’ and boys’ performance were【C20】______"trivial".
【C13】

选项 A、cases
B、reasons
C、factors
D、situations

答案C

解析 语义衔接题。这里说的是不同性别的数学技能发展受到哪些影响。前面提到的this指代数学神童中女孩人数少,但差距在缩小的情况。[A]cases“事例;情况”和[D]situations“情况”与前面的circumstances“情况”重复。[B]reasons“理由”很明显不符合语境,故排除,故答案为[C]factors“因素”。此处是说,社会、文化和其他环境因素对不同性别数学技能发展的影响。
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