硬角膜接触镜的曲率半经较角膜的曲率半经越大,镜片在角膜上的活动度越小()
参考答案:错
解析:活动度大。
---Let’s go hiking ___________ staying at home , shall we?
----A good idea.
A.as well as
B.in order to
C.instead of
D.in addition to
属于国家三级保护野生药材物种的药材有()
A.鹿茸
B.蟾蜍
C.川贝母
D.龙胆