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【判断题】
亚急性细菌性心内膜炎病人做血培养时,为提高阳性率,采血量应为5~8mLA.
正确
B.
错误
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举一反三
【单选题】— Did you listen to the report last Friday? — Yes, it was about the shortage of migrant workers. That was the first time I ____ about the subject. [ ]
A.
heard
B.
was hearing
C.
would hear
D.
had heard
【简答题】语气的表达有不同的手段，首先是（），其次是语气词。
【单选题】—Did you listen to the report last Friday? —Yes, it was about the shortage of immigrant workers. That was the first time I ________ about the subject.
A.
have heard
B.
was hearing
C.
would hear
D.
had heard
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