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  3. If it were only necessary to decide whether to teach elementary science to everyc ne on a mass basis or to find the gifted few a

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

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问题     If it were only necessary to decide whether to teach elementary science to everyc ne 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【1】,【2】the jobs must be carried【3】at the same time. Because we depend so【4】upon science and tech-nology for our【5】, we must produce specialists in many fields.【6】we live in a【7】nation, whose citizens make the policies for the nation, large numbers of us must be educated to understand, to uphold, and【8】necessary, to judge the work of【9】The public school must educate both producers and【10】of scientific services.
    In education, there should be a good balance【11】the branches of【12】that contribute to effective thinking and【13】judgment. Such balance is defeated by【14】much emphasis on any one field. This【15】of balance involves not only the【16】of the natural sciences, the social sciences and the arts but also relative emphasis among the natural sciences themselves.
    【17】, we must have a balance between current and【18】knowledge. The attention of the public is continually drawn to new【19】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【20】for beginners.
选项 A、unless
B、in case
C、when
D、only
答案C
解析 本题选“when”。根据原文，在文章开头作者就用假设的手法提出了问题“if…whether…or”，而“when”表达的是对可能出现的某种情况的回答，即对“if”的假设问题的回答，所以选择“when”。而选项A“unless除非；除外”，选项B“in case万一”，选项D“only仅仅”均不符合题意。
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