吊钩升起后，一般高出地面最高障碍物（）米为宜。
A.0.2
B.0.5
C.0.8
D.1
参考答案：B
---Have you seen Dr. Adams recently?
---No. He __________ Hong Kong for an important meeting. He’ll come back tomorrow.
A．has gone in
B．has been in
C．has gone to
D．has been to
霍乱病人的粪便是（）
A.黏液脓血便
B.绿色稀便
C.柏油便
D.水样便
E.米泔样便
