变形缝的种类不包括( )。
A．伸缩缝B．压力缝C．沉降缝D．防震缝
参考答案：B
用恰当的不等号表示下列关系：
①x的3倍与8的和比y的2倍小：（ ）；
②老师的年龄a不小于你的年龄b小：（ ）．
It is an abundance of cheap goods and quick delivery service ______ account for the fact that the number of Internet shopping on this website is four times ______ it was last year.
A．that; that
B．which; what
C．what; that
D．that; what
