未经治疗的SLE或MCTD患者,具有临床诊断价值的ANA滴度一般是()
A.1:10以上
B.1:50以上
C.1:100以上
D.1:500以上
E.1:1000以上
参考答案:C
When Mr. Wang was young, he______a hospital to help the sick people.[ ]
A. opens
B. opened
C. will open
D. is opening
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