结核样型麻风的麻风菌素试验为()
A.阴性
B.阳性
C.假阳性
D.弱阳性
E.个体有差异
参考答案:B
Usually John would be late for meetings. But this time, to my surprise, he arrived on time.
A little B. much C. ever D. even
停电、送电应禁忌什么?