混凝土拌合物愈干硬，表明该混凝土的维勃稠度值()。
A.愈大
B.愈小
C.不变
D.趋于零
参考答案：A
---What made the students so upset?
---______ to go to the movie.
A．Having not been allowed
B．Not having allowed
C．Because of not having allowed
D．Not having been allowed
请写出一个项数是3，且多项式次数也为3的多项式（ ）．
