题目

一辆汽车由甲地出发向乙地做匀速直线运动，途中司机下车办事，汽车停了一段时间后继续做匀速直线运动，最后到达乙地。下图所示的s－t图象中，能粗略描述汽车运动情况的是 答案：D根据句意填写适当的单词。l. We must _____ our classroom clean.2. There are some _____ between the two pictures.3. He _____ goes to restaurant for dinner, because the restaurant is not clean.4. Katrina doesn't often _____ coffee, she likes green tea.5. My eating _____ are not very good.