下列腧穴中,孕妇应禁针的是()。
A.曲池
B.肩井
C.肩贞
D.大椎
E.足三里
参考答案:B
My brother finished _____ the storybook yesterday. He returned it to the library. [ ]
A. to write
B. writing
C. to read
D. reading
机车轮轨润滑装置,其主要作用是减少车轮轮缘与钢轨(),提高轮缘()。