脑脊液采集的第一管一般用作以下哪项检查（）
A.细菌培养
B.化学定性检查
C.化学定量检查
D.免疫学检查
E.外观检查
参考答案：A
---Do you often go there to play basketball?
--- Yes, ____it rains heavily.
A．except for
B．in addition
C．only if
D．except where
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