2. 外语
  3. Mankind must first of all eat, drink, have shelter and clothing______ it can pursue politics, science, art, religion, etc.

Mankind must first of all eat, drink, have shelter and clothing______ it can pursue politics, science, art, religion, etc.

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问题 Mankind must first of all eat, drink, have shelter and clothing______ it can pursue politics, science, art, religion, etc.
选项 A、later
B、before
C、when
D、if
答案B
解析 这是before的一种特殊用法，意为“在……之前必须……才能……”，可译作“只有……才能……”，多用在must(have to)…before…can…句型中。如：One must sow before one canreap．“只有播种才有收获。”New ideas sometimes have to wait for years before they can be fullyaccepted．“有时新的思想必须等待多年后才能被人们完全接受。”
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