Those experienced doctors in our country _______the meeting in order to find out the real_______ of bird flu(禽流感).
A.attended; cause | B.joined; reason | C.joined; cause | D.attended; reason |
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Those experienced doctors in our country _______the meeting in order to find out the real_______ of bird flu(禽流感).
A.attended; cause | B.joined; reason | C.joined; cause | D.attended; reason |