在气管食管沟内通过的是（）。
A.膈神经
B.副神经
C.喉上神经
D.喉返神经
E.舌下神经
参考答案：D
年龄别身高生长曲线，男女之间有（）次交叉。
—Do you know Tsering Danzhou, a Tibetan ten-year-old boy in Yushu?
—Yes. He the people his great help as a translator after the earthquake.
A．provided
B．supported
C．offered
D．Afforded
