肋骨骨折多发生于()。
A.1~3肋
B.3~4肋
C.4~7肋
D.5~8肋
E.8~10肋
参考答案:C
解析:第4~7肋骨薄而长,最易发生骨折。
—“What courses are you going to take next semester if you want to receive enough credits to get your degree?”
—“I don’t know. But it’s about time on something.”
A.I’d decide
B.I decide
C.I’m deciding
D.I decided