We need some more facts and figures __________ we take the final decision.


  1. A.
    since
  2. B.
    before
  3. C.
    after
  4. D.
    until
B
試題分析：考查連詞的用法，A. since自從；B. before在…之前；before主要引導(dǎo)時(shí)間狀語從句，意為“先于”“…之后才”“(不多久)就…”。當(dāng)主句是將來時(shí)時(shí)，從句謂語動(dòng)詞須用現(xiàn)在時(shí)；當(dāng)主句是一般過去時(shí)或過去完成時(shí)時(shí)，從句常用過去時(shí)。before引導(dǎo)的時(shí)間狀語從句不能用于否定式。C. after在…之后；D. until直到…，句子意思“在我們做最后決定之前我們需要一些證據(jù)和數(shù)據(jù)”
考點(diǎn)：考查連詞的用法
點(diǎn)評：連詞是高考常考內(nèi)容，判斷從句中用哪個(gè)連詞，需用記住連詞的用法，在句中的作用，需要考生平時(shí)多練習(xí)。
即學(xué)即練：We hadn’t been out for long _________ she felt sick.
A. as      B. while      C. after         D. before
選D   句意：我們還沒出去多久她就生病了。
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