缓和曲线最小长度考虑？
参考答案：
1.旅客感觉舒适
2.超高渐变率适中
3.行驶时间不过短
Jane likes collecting stamps very much.In fact,her interest in it _____ her school days.[ ]
A. dates back to
B. dated back to
C. dates back from
D. dated back from
下列哪项不是肾阴虚证的临床表现（）
A.阳强易举
B.遗精早泄
C.齿松发脱
D.经少经闭
E.性欲减退
