鲜红斑痣常用的治疗方法为冷冻。
参考答案:错
he said he wasn't hungry at all, he ate a big breakfast.[ ]
A. Unless
B. Because
C. Though
D. If
在反应4P+3KOH+3H2O=3KH2PO2+PH3中氧化剂与还原剂的物质的量之比为( )
A.3:1
B.1:3
C.4:1
D.1:4