2. 外语
  3. If it were only necessary to decide whether to teach elementary science to everyone on a mass basis or find the gifted few and t

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

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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 find the gifted few and take them as far as          【M1】______
they can go, our task would be simple. The public
school system, therefore, has no such choice, for the   【M2】______
jobs must be carried on at the same time. Because
we depend so heavy upon science and technology          【M3】______
for our progress, we must produce specialists in
many fields. Because we live in a democratic
nation, which citizens make the policies for the        【M4】______
nation, large numbers of us must be educated to
understand, to support and when necessary, to
criticize the works of experts. The public school       【M5】______
must educate both the producers and users of scientific services.
    In education, there should be a good balance between【M6】______
the branches of knowledge that attribute                【M7】______
to effective thinking and wise judgement. Such
balance is defeated by too much emphasis on
any one field. This question of balance is involved     【M8】______
not only the relation of natural sciences, the social
sciences, and arts but relative emphasis among
the natural science themselves.
    Similarly, we must make a balance between           【M9】______
current and classical knowledge. The attention
of the public is continually drawn to new possibilities
in scientific fields and the discovery from new         【M10】______
knowledge; these should not be allowed to turn our
attention away from the sound, established materials
that form the basis of courses for beginners.
【M2】
选项
答案therefore: however
解析 根据上下文，这里应是转折关系，而非因果关系。前面谈到科普与培优若能二选其一事情就很简单，后文转折：但学校教育系统别无选择。故用however更符合原文。
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