题目

请阅读下面短文。根据短文内容，从方框内所给的选项中选出能填入空白处的最佳选项，使短文意思通顺。选项中有一项为多余项。 Hello! I am Bob.My jacket is nice. It's green. What'sthis in English? It's a key.Whatis that? It's an English CD.Whatis that in English? It's a cup.It'sred. What's that in the cup? Oh, it's a black pen.It's blue. It's 100 yuan. A. That is a quilt. B. It's a yellow key. C. I'm English. D. I like the CD. E. What color is it? F. What's that in English?（12分）2012年10月4日，云南省彝良县发生特大泥石流，一汽车停在小山坡底，突然司机发现在距坡底240 m的山坡处泥石流以8 m/s的初速度、0.4 m/s2的加速度匀加速倾泻而下，假设泥石流到达坡底后速率不变，在水平地面上做匀速直线运动。已知司机的反应时间为1 s，汽车启动后以0.5 m/s2的加速度一直做匀加速直线运动。试分析汽车能否安全脱离？