细胞外液的主要溶质是()
A.镁
B.蛋白
C.有机酸
D.钠
E.钾
参考答案:D
能够“风吹草低见牛羊”的高原是( )
A.青藏高原
B.内蒙古高原
C.云贵高原
D.黄土高原
– Did you enjoy the book?
--- Yes, it was so interesting that I couldn’t _____ it.
A.get rid of
B.break away from
C.keep away from
D.tear myself away from