功能性遗尿是指（）仍经常出现的不自主性排尿。
A.3岁以后
B.5岁以后
C.7岁以后
D.10岁以后
E.5-7岁
参考答案：B
正常人血液和组织中含有的抗菌物质是（）
A.血红蛋白
B.补体
C.备解素
D.溶菌酶
E.干扰素
I can’t remember __________ you started to do the work.
A when it was that B when was it that
C it was when D that it was when
