早期诊断吸入性损伤具有诊断意义的症状（）
A.呼吸缓慢
B.恶心呕吐
C.呼吸性碱中毒
D.声嘶和喘鸣
E.烦躁
参考答案：D
It is rather difficult to make friends with him, but his friendship, _________ is more true than any other's. [ ]
A. once gained
B. When to gain
C. After gaining
D. While gaining
皮影戏
