Experts are trying to work out a plan to deal with the problems caused by global warming ______ it is too late.
A．whenB．ifC．beforeD．until
C

試題分析：連詞辨析。A當(dāng)…時；B如果；C在…前；D直到…才；句意：專家們正在努力制定一個在情況不是很晚的時候處理那個由全球變暖導(dǎo)致的問題的計劃。根據(jù)句意說明是在情況變晚之前就采取的計劃。故C正確。
點評：連詞的詞義辨析要放在上下文的語境中進行，要注意上下文的語義的串聯(lián)以及邏輯關(guān)系的推理，特別要注意一些連詞和時間狀語的固定搭配。
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：單選題

____ the movie star has always been the focus of much media attention, he tries to lead a normal life.
A．WhenB．WhileC．UnlessD．Since

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

We haven’t dicussed yet _______ we are going to place our new furniture.
A．thatB．whichC．whatD．where

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Why not stay at home ______ the road is so slippery after the heavy snow?
A．so long asB．in caseC．so far asD．now that

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

— How long has your brother been working in this factory?
— 　　　 he graduated from college.
A．WhenB．By the timeC．UntilD．Ever since

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

She always buys me a nice present _________ she comes to see me .
A．the first timeB．every timeC．the momentD．immediately

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

As many as five courses are provided, and you are free to choose_______ suits you best.
A．whatever B．whicheverC．wheneverD．wherever

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

       I was in trouble,he would come to help me out.
A．Next timeB．The first time
C．All the timeD．Every time

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

           we can’t remove our troubles in life forever, we can leave them behind when we are on vocation.
A．WhenB．WhileC．UnlessD．Until

查看答案和解析>>

同步練習(xí)冊答案