利用高温破坏胶体稳定性，低温使鞣质沉淀的除鞣质法是（）
A.聚酰胺吸附法
B.单纯加热法
C.明胶法
D.石灰法
E.冷热处理法
参考答案：E
The fact that so many people still smoke in public place _____ that we may need nationwide campaign
to raise awareness of the riks of smoking. [ ]
A. suggest
B. suggests
C. suggested
D. suggesting
下面（）是因特网上的常用网络协议。
A、SMTP
B、HTTP
C、HTML
D、FTP
E、URL
