中学生的头发拉断时所需用的力大约是[ ]
A.0.9N
B.1.7N
C.9N
D.17N
答案:B
I was told that a film directed by Feng Xiaogang this coming Sunday.
A.is showed
B.will be showing
C.will show
D.would be shown
古代儿童教材又叫()。