湿邪滞鼻的症状为（）
A.鼻流清涕
B.鼻流浊涕
C.鼻流黄涕
D.鼻流白涕
E.久病嚏涕并作
参考答案：D
- Must I go to medical school and be a doctor like you, Dad?
- No, you______ .You are free to make your own decision.
A．can't
B．mustn't
C．shouldn't
D．needn't
It usually takes me forty minutes _______ the model plane.
A．make
B．to make
C．write
D．to write
