十六周岁以上不满十八周岁的公民不能颁发导游证。( )
参考答案：错
旋毛虫病
A．粪便直接涂片法B．粪便饱和盐水漂浮法C．肛周拭子法D．外周血厚涂片法E．肌肉活体检查
——How long has his father ________London?
——For two weeks.
A．been to
B．gone to
C．been in
D．arrived in
