问题
选择题
17. ________ is expected, according to the on-line survey, is that prices of houses will not go up any longer.
A．It
B．As
C．Which
D．What
答案
答案：D
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17. ________ is expected, according to the on-line survey, is that prices of houses will not go up any longer.
A．It
B．As
C．Which
D．What
答案：D
，如果P|X-μ|＜a)=P|
-μ|＜b，则比值