题目

为了使公路交通有序、安全，路旁立了许多交通标志，如图所示，甲图是限速标志，表示允许行驶的最大速度是80km/h；乙图是路线指示标志，此处到青岛还有150km．上述两个数据表达的物理意义是（ ） A．80km/h是平均速度，150km是位移 B．80km/h是瞬时速度，150km是路程 C．80km/h是瞬时速度，150km是位移 D．80km/h是平均速度，150km是路程任务型阅读1.Isabel： List the foods served on the school lunch menu for one day. Tell why you think that group of foods was chosen. Then write a passage about your favorite school lunch. Tell why it is your favorite.2.Michael： Watch a nature or wildlife program on television. Take notes as you watch. Think about what you've learned. Writ e a passage of information telling about the subject of the program.3.Sarah： What is your favorite sports activity? Think of reasons why others would enjoy it too. Does it develop your skills? Does it teach teamwork? Why is it fun? Write a passage that will advise another person to try the activity.4. Alan： Music is enjoyable. It can also excite your imagination. Listen to a piece of music that you like. Does it create any pictures in your mind? Does it carry you away to another place? Tell what you can see and hear in your imagination.5.Ricky： Sometimes it takes several steps to solve a math problem. Think of a problem that you have solved. You might have worked out how much money you would have left after buying some things. Now tell other people what steps to take to solve the problem.