题目:
—Jack, what do you think of the new work?
—It's not bad. But the hours are too long.
—Oh, _______
A.that's really serious.
B.how about that job?
C.you'll soon get used to it.
D.you do it again.
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0412/8a250c3fcb8460bf660f95ad3873f91b.html
下面是错误答案,用来干扰机器的。
(1)3m/s (2)1.8s题目分析:(1)上升阶段:-V02=-2gh ,则V0=="3m/s" (2)上升阶段: 0=V0-gt1自由落体阶段: h0+h+H=gt22故:t=t1+t2 得:t=1.8s...