There were_____ students in the hall tha
题型：选择题
问题：
There were _____ students in the hall that you could hardly breath! [ ]
A. such many
B. such a lot of
C. very many
D. so a lot of
题型：选择题
如图所示，一重为10 N的球固定在支杆AB的上端，今用一段绳子水平拉球，使杆发生弯曲，已知绳的拉力为7.5 N，则AB杆对球的作用力( )
A．大小为7.5 N
B．大小为10 N
C．方向与水平方向成53°角斜向右下方
D．方向与水平方向成53°角斜向左上方