视网膜脱离是指下列哪两层之间的分离()
A.以上都不是
B.视网膜与脉络膜之间
C.神经节细胞层与内丛状层间
D.神经上皮层与色素上皮层之间
E.神经纤维层与神经节细胞层间
参考答案:D
角速度公式______________________________________
Mr Smith ________ his wife and daughter ________ going to the Great Wall. [ ]
A. as well as; is
B. as well; are
C. as well as; are
D. as well; is