有关健康牙槽骨的说法错误的是()
A.牙周储备力大
B.骨小梁排列紊乱
C.对力的承受力高
D.对咬合力有动态反应
E.骨质致密
参考答案:B
—Have you got some water to drink?
—Here you are. There _______ still some in the bottle. [ ]
A. are
B. has
C. is
D. have
公共政策问题同任何问题一样都是源自()
A、社会期望
B、社会需要
C、客观的社会现实
D、理想情况