A.as; which | B.that; as | C.which; which | D.as; as |
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We sat down next to each other, but David wouldn’t look at me. Tapping him gently on the shoulder, I asked David what had caused him to decide to give up the opportunity.
科学体现价值的第一种方式对每个人而言都耳熟能详:科学知识让我们能够做各种各样的事,造不同种类的东西。