搜题请搜索小程序“爱下问搜题”
问题 填空题

因式分解：m2-1=（    ）。

答案

（m+1）（m-1）

选择题
The buildings were completely ______ by the torrent (洪流) of mud and rocks and ______ people had
to live in the shelters put up by the PLA men.

A. destroyed, thousand of
B. damaged; thousands of
C. ruined; thousand of
D. destroyed; thousands of
查看答案
单项选择题

( )是当事人为了重复使用而预先拟定，并在订立合同时未与对方协商的条款。

A．格式条款
B．非格式条款
C．必备条款
D．非必备条款
查看答案