下列哪项疾病咳出的痰分层
A．肺脓肿
B．大叶性肺炎
C．支气管哮喘
D．支气管炎
E．肺不张
参考答案：A
—We'll have a hiking trip, but when shall we meet?
—Let's make it ______ half past eight ______ the morning of June 21. [ ]
A. at; in
B. /; on
C. /; in
D. about; by
不会出现发绀的疾病是（）
A.肺炎
B.严重贫血
C.气胸
D.急性左心衰竭
E.慢性阻塞性肺疾病
