【解析】本题考察非谓语动词,to do表示目的,答案选C。 28 【答案】C 【翻译】如果遇到不懂的东西,你可以搜索,研究,和别人交流直到你弄清楚。 【解析】本题考查状语从句。 A选项意为“因为”,B选项意为“尽管”,D选项“自从”或者“因为”,C选项符合语境,答案选C。
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