宿翳的特征是,除了:
A.黑睛混浊B.表面光滑C.表面粗糙D.边界欠清晰E.无赤痛流泪
参考答案:C
——Can you go to the Great Wall with us next week?
—___________.[ ]
A. Yes, I can't
B. Sure, I'd love to
C. Sorry, I don't
D. No, I can
目前已发现的高致病性禽流感病毒主要有()亚型。
A.H5N7、H7N1
B.H5N1、H7N7
C.H5N2、H7N1