下列标本采集法错误的是
E
暂无解析
_____alltherepresentativesstillnotthere，themeetingwaspostponedforseveralhours.
Icanspeak_____German.
Hedidn‘tseemtomind_____themusicwhilehewasstudying.
下列属于高危儿的是（）
Mywalletisnowheretobefound.I_____itwhenIwasonthebus.
