失神的临床意义是（）
A.正气不足，神气不旺
B.正气未伤，精气未衰
C.经亏气损神衰
D.阴阳隔绝的危候
E.临终前的预兆
参考答案：C
Shirley _____ a book about China last year but I don't know whether she has finished it. [ ]
A. has written
B. wrote
C. had written
D. was writing
庖丁释刀对曰：“臣之所好者道也，进乎技矣。始臣之解牛之时，所见无非牛者。三年之后，未尝见全牛也。
这段文字跟整篇文章中心观点的联系？
