—I was born in a small village with only three _______ people.
A:hundred
B:hundreds
C:hundreds of
走进化学实验室,同学们学会了最基本的操作,以下操作正确的是
发酵技术与我们的生活息息相关,与做馒头、制酸奶有关的微生物是( )
计算:22014﹣(﹣2)2015的结果是( )