题目

根据语境,用方框中所给短语的适当形式填空。(每个短语仅使用一次)come into being; according to; so that; do harm to; be employed in; long before; a number of; come after; for sure; die out (1) Just as the light will the darkness, the end of the hard way is sure to be happy forever. (2) I'm afraid you must get out of the habit, for it'll your health. (3) Some reports said he had left the camp only a couple of hours earlier, but we never knew . (4) The company has a free long-distance telephone number buyers can cal15.下列有关蛋白质工程的叙述,正确的是(  )A.一般直接通过对蛋白质的改造生产新型蛋白质B.蛋白质结构和功能的关系是蛋白质工程的基础C.通过蛋白质工程只能生产自然界原有的蛋白质D.蛋白质工程的流程和天然蛋白质合成的过程是相同的
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