长期咳嗽，咯白色泡沫痰，可能是()
A.支气管哮喘
B.肺炎
C.支气管扩张
D.慢性支气管炎
E.肺结核
参考答案：D
This is one of the best novels _______ appeared this year.
A．that has
B．have
C．that have
D．what has
—Can I help you?
—________. [ ]
A. Yes, I can
B. Yes, please
C. No, I can't
D. Yes, I do
