以下哪个不属于iis自带的服务（）
A.telnet服务
B.web服务
C.ftp服务
D.smtp服务
参考答案：A
—______ two little boys behind the trees?
—No, ______. [ ]
A. Is there; there is
B. There isn't; there are
C. Are there; there aren't
D. There aren't; there aren't
下列哪些情况不能洗胃（ ）
A．幽门梗阻
B．腐蚀性胃炎
C．胃扩张
D．严重食管胃底静脉曲张
E．胃溃疡
