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问题
单项选择题 A1型题
下列方法中微丝蚴检出率最高的是
A．薄膜过滤法
B．厚血片法
C．白天诱出法
D．浓集法
E．鲜血法
答案
参考答案：A
选择题
— Why didn't Ted _____ us in singing?
— _____ he was upset today. He was caught smoking in the dormitory.
A. join in ; Because of
B. join; Because
C. attend; Because
D. take part in; For
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单项选择题
辐流沉淀池从（）进水。
A.周边
B.中间
C.池子一端
D.周边和中间
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