2013年9月5日至6日,二十国集团领导人第八次峰会在俄罗斯圣彼得堡举行,峰会的主题是()
参考答案:增长和就业
Older people need the same amount of vitamins as younger people although they need fewer
calories, ______ ?
A. needn't they
B. need they
C. don't they
D. do they
与釉柱排列相关的结构是()。
A.釉板
B.生长线
C.横纹
D.无釉柱釉质
E.釉丛