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 (36) , however, has no such choice, for the job must be (37) on at the same time. Because we depend so (38) upon science and technology for our progress, we must produce (39) in many fields. Because we live in a democratic nation, whose citizens make the policies for the nation, large numbers of us must be educated to understand, to support, and when necessary, to (40) the work of experts. The public school must educate both producers and users of scientific services. In education, there should be a good balance among the branches of knowledge that contribute to effective thinking and wise judgment. Such balance is (41) by too much emphasis on any one field. This question of balance involves not only the relation of the natural sciences, the social sciences, and the arts but also relative (42) among the natural sciences themselves. Similarly, we must have a balance between current and (43) knowledge. The attention of the public is (44) drawn to new possibilities in scientific fields and the discovery of new knowledge; these should not be allowed to turn our attention away from the sound, (45) materials that form the basis of courses for beginners. A．awarded I．continually B．heavily J．specially C．classical K．emphases D．display L．establishment E．established M．specialists F．system N．carried G．involved O．judge H．defeated