题目内容
10.Aspirin and penicillin have provedbeneficial(有益的,有用的) to mankind since they were invented.分析 自从被发明阿司匹林和青霉素证明对人类是有益的.
解答 答案是beneficial.本题考查语境中选用恰当的词或短语;beneficial adj.有益的; be beneficial to 对…有益的;题干中的prove为连系动词,故答案是beneficial.
点评 翻译填空要在理解句子的结构和含义的基础上根据汉语意思选择恰当的词、短语或句型;同时注意所选词的形式变化.
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