( )是表明社会经济现象对某一固定基期的综合变动程度的指数。
A.定基指数 B.环比指数 C.单项价格指数 D.综合造价指数
参考答案:A
-- You shouldn’t have made _________ appointment with her that you couldn’t keep.
-- What _________ pity! It was not my fault. It was she who was to blame.
A.an; the
B.the; a
C.an; a
D.the; the
关于 * * 的描述错误的是()
A.为一肌性管道
B.是女性的性交器官
C. * * 穹后部最深
D. * * 下部穿尿生殖膈
E.属于女性外生殖器