research是可数名词吗?

调查,研究---不可数
Examples:
1.He is busy with research work.
他专心于研究工作.
2.Research workers are examining the problem.
研究人员正在研究那个问题.
3.My research is just bouncing along at present.
目前我的调查进展得很顺利.
4.We all support his scientific research.
我们都支持他的科学研究.
5.This research merely duplicates work already done elsewhere.
这项研究仅仅是重复别人已经做过的工作.
6.The book was the result of ten years of assiduous research.
那本书是十年苦心钻研的成果.
7.Research indicates that men find it easier to give up smoking than women.
研究表明,男人比女人更容易戒烟.
8.The mission of a university is teaching and research.
大学的任务是教学和科研.