要约一经承诺并送达于要约人，合同即告成立。则以下属于承诺的是( )。
A．招股说明书
B．中标通知书
C．投标书
D．拍卖公告
参考答案：B
Ten years ago the population of our village was _______ that of theirs.
A．as twice large as
B．twice as large as
C．twice as much as
D．as twice much as
信息技术课程的总体目标是（）。课程的三维培养目标是（）、（）、（）。
