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They are broadening the bridge to_____ the flow of traffic.


  1. A.
    put off
  2. B.
    speed up
  3. C.
    turn on
  4. D.
    work out
B
解析:
考察動(dòng)詞的辨析。句意為:他們正在拓寬橋面來(lái)加快交通流量。put off推遲 ;turn on打開(kāi); work out解決;算出;實(shí)現(xiàn)。
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