If it were only necessary to decide whether to teach elementary science to everyone on a mass basis or to find the gifted few an

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问题     If it were only necessary to decide whether to teach elementary science to everyone on a mass basis or to find the gifted few and take them as far as they can go, our task would be fairly simple. The public school system, however, has no such 【B1】______, 【B2】______ the jobs must be carried 【B3】______ at the same time. Because we depend so 【B4】______ upon science and technology for our【B5】______, we must produce specialists in many fields.【B6】______we live in a 【B7】______ nation, whose citizens make the policies for the nation, large numbers of us must be educated to understand, to uphold, and 【B8】______ necessary, to judge the work of 【B9】______. The public school must educate both producers and【B10】______of scientific services.
    In education, there should be a good balance 【B11】______ the branches of【B12】______that contribute to effective thinking and【B13】______judgment. Such balance is defeated by【B14】______much emphasis on any one field. This【B15】______of balance involves not only the【B16】______of the natural sciences, the social sciences and the arts but also relative emphasis among the natural sciences themselves.
    【B17】______, we must have a balance between current and【B18】______knowledge. The attention of the public is continually drawn to new【B19】______in scientific fields and the discovery of new knowledge; these should not be allowed to turn our attention away from the sound, established materials that form the basis of【B20】______for beginners.
【B20】

选项 A、grounds
B、courses
C、doctrines
D、quotas

答案B

解析 考查名词辨析。文章开头提到:...teach elementary science to everyone on a mass basis…B.courses“教学,课程,教程”,与“elementary science”形成呼应,为最佳选项。grounds“场地,背景”,doctrines“教义,教条,主义”;quotas“(分)定额,限额,配额;定量”,均不符合题意。
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