The flu is believed _______ by viruses that like to reproduce in the cells insid
题型:不详难度:来源:
The flu is believed _______ by viruses that like to reproduce in the cells inside the human nose and throat.A.causing | B.being caused | C.to be caused | D.be have caused |
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答案
C |
解析
此题考查非谓语结构。在英语中表示“据说/传/知道……” 的句型是It is said/reported/known that sb./sth.="Sb./Sth." is said/reported/known to...;流感是被引起的,所以选C项。 |
举一反三
I don’t know whether you happen_______, but I’m going to study in the U.S.A. this September. A. to be heard B. to be hearing C. to hear D. to have heard |
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—Can the project be finished as planned? —Sure, _______ it completed in time, we’ll work two more hours a day.A.having got | B.to get | C.getting | D.get |
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