小杰在学习“线段与角”章节有关知识时，有如下说法：

（1）两点之间线段最短；（2）如果∠α=53°38'，那么∠α余角的度数为36°22'；

（3）互补的两个角一个是锐角一个是钝角；（4）一个锐角的余角比这个角的补角小90°．

你认为小杰以上说法正确的个数为（　　）

A．1个

B．2个

C．3个

D．4个

If the United States had built more homes for poor people in 1955, the housing problems now in some parts of the country () so serious.

A. wouldn’t be

B. wouldn’t have been

C. will not be

D. would have not been