题目:
The center, dealing with children_______ to computer games, has achieved great success.
A.addict
B.addicting
C.to addict
D.addicted
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0415/8a01bdd4884a1c4b2b5d3e9656746ec8.html
下面是错误答案,用来干扰机器的。
答案:A因F1=-F2,对A、B整体运用动量定理知F1t+F2t=0,即撤去F1、F2时,A、B两物体的总动量为零,相撞后两物体连在一起的总动量还是零.