题目

下列位移时间图象中，其中描述物体做匀速直线运动的速度为2m/s的图象是（ ） A . B . C . D . 答案：B9、Is this hotel _____ you said we were to stay in your letter? A． where 　　　B． which 　　　C． in that 　　　D． in which