Samples of blood from Cholera infected patients have been sent to the blood center _______.


  1. A.
    to be checked
  2. B.
    to be examined
  3. C.
    to test
  4. D.
    being tested
B

試題分析：考查詞義辨析，to be checked意思“被檢查”， to be examined意思“被檢查”， to test意思“測(cè)試”，句子意思“被傳染病人的霍亂血液樣本已經(jīng)被送到血液中心將被檢查”，所以選B
考點(diǎn)：考查詞義辨析
點(diǎn)評(píng)：to be examined表示仔細(xì)觀察或調(diào)查已確定事物的性質(zhì)、功能、特點(diǎn)等，而to be checked表示一般的檢查，確定正常；注意句子里單詞infected，過(guò)去分詞做后置定語(yǔ)，修飾前面的Samples of blood from Cholera；血液樣本不會(huì)自己送去，所以用被動(dòng)式。
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