“十二五”期间，预计我国建设管道总长度将超过（）公里。
A.2万
B.3万
C.4万
参考答案：C
. —I got an email from Susan, ______ said Ushe was going abroad for sightseeing.
—Fantastic! That’s what she has been dreaming of.
A．which
B．she
C．who
D．it
规范控制的作用是什么？
