干眼病
参考答案：
指各种原因引起的泪眼质和量的异常，或动力学异常导致泪膜稳定性下降，并伴有眼部不适和眼表病变为特征的多种病症的总称。
—How many ____ would you like?
—Two, please.[ ]
A. glasses of milk
B. glass of milks
C. glasses of milks
D. glass of milk
