在下列足部的骨头中，不属于跗骨的是（）。
A、跖骨
B、楔骨
C、跟骨
D、足舟骨
参考答案：A
The Expo 2010 Shanghai China has been a successful event. If it _____ for one more week, we might have
visited all the pavilions. [ ]
A. continues
B. had continued
C. continued
D. has continued
患儿男，生后2天，出生体重为2400g。因吸入性肺炎入院，入院时患儿呼吸急促，口唇稍发绀。即置于辐射保暖床上抢救。
该患儿吸氧的流量应选择每分钟为（）
A.1L
B.2L
C.3L
D.4L
E.5L
