听力原文:Had you been out of work before you came to America?
(A) No, I had been stayed at home.
(B) Yes, I had been jobless for 3 months.
(C) Yes, I had worked in America for one year.
(33)
A.
B.
C.
第5题
猝倒病发病条件是( ),主要在苗床( )期发生。立枯病发病条件是( ),多在苗床( )期发生。
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