索引（index)是依赖________建立的,它的作用是用来提高数据的_________速度。

A.由Key定义的索引

B.由Union定义的索引

C.由Unique定义的索引

D.由Index定义的索引

A.select权限

B.index权限

C.alter权限

D.create权限

A.数据依赖

B.索引

C.页式管理

D.目录

A.index

B.poster

C.log

D.封面

A.len(lst)

B.len(lst[2])

C.lst[1].index('t')

D.lst.count('t')

A.index、html

B.index、asp

C.default、jsp

D.default、aspx

As a measure of body fat, BMI (body mass index) is calculated according to

听力原文：Which of the following can be categorized as a lagging index？

(32)

A．Unemployment rates.

B．Manufacturing rates,

C．Interest rates,

D．People's expectations of the economy.

The S&P 500 index rose by 2.3% on July 29th as a result of ______.

A．interruption of the ministerial talks

B．the healthy pace of globe GDP

C．the growth of the world's GDP by $70 billion

D．other factors