提高检索效果的措施和主要方法

His promise _____ he would give away half of the year’s income to the disabled turned out a lie,

_____ made the public feel cheated.

A．which; what

B．that; which

C．what; which

D．which; that

I           the sea because I don't know how to swim.[ ]

A. am afraid of    

B. am afraid        

C. am afraid to        

D. like

0.40和0.4大小一样，但意义不同．______．

从所给的四个选项中，选择最合适的一个填入问号处，使之呈现一定的规律性。

A.A

B.B

C.C

D.D

什么是帕斯卡原理？