全球第一部专利法:高考单选题

来源:百度文库 编辑:查人人中国名人网 时间:2024/05/15 08:53:11
_____work has been done to improve the people's living standard.
A Many B A great deal of
答案A

B A great deal of
修饰不可数名词
work,工作,应为不可数。

同意