石块间较大的空隙应先填砂浆后用碎石块嵌实，不得采用先摆碎石块后塞砂浆或干填碎石块的方法。( )
参考答案：对
I ________do e-shopping at home than go to the department store.
A．would rather
B．would like
C．had better
D．prefer
构成循环结构的语句有( )个。
A．1
B．2
C．0
D．3
