单项选择题

A．Three thousand years ago.
B．When man began to salt fish.
C．When man began to preserve the dead.
D．No one knows.
<上一题 目录 下一题>
热门 试题

填空题
bought
单项选择题
A．Call his friend.B．Go to the office to get his test.C．Send the woman a letter.D．Take the test later.
A．Call his friend.
B．Go to the office to get his test.
C．Send the woman a letter.
D．Take the test later.
相关试题