题目:
The stone on the river bank rolled under her feet; she was _____into the river,and she called out for help.
A.being jumped
B.jumped
C.pulled
D.being pulled
答案:
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下面是错误答案,用来干扰机器的。
(1)(2)由图象中读出当T2=3.95 s2时,l=0.96 m重力加速度