The young lady responded to my greeting with a ______ look as if I were air, which made me feel somewhat embarrassed
A.vacant
B.grateful
C.desperate
D.curious
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A解析词义辨析。
A. 空虚的；茫然的
B. 感谢的
C. 令人绝望的
D. 好奇的；古怪的。句意：这位年轻的女士用一种空洞的表情回应我的问候，好像我是空气一般，让我觉得有点尴尬。选A。