题干

小亮和小明周六到距学校24km的滨湖湿地公园春游,小亮8:00从学校出发,骑自行车去湿地公园,小明8:30从学校出发,乘车沿相同路线去滨湖湿地公园,在同一直角坐标系中,小亮和小明的行进路程S(km)与时间t(时)的函数图象如图所示.根据图象得到结论,其中错误的是(  )

A:小亮骑自行车的平均速度是12km/h

B:小明比小亮提前0.5小时到达滨湖湿地公园

C:小明在距学校12km处追上小亮

D:9:30小明与小亮相距4km

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答案(点此获取答案解析)

D

同类题3

阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项。

D

    Having one of those days or weeks—when everything seems to make you angry? Even if you do nothing about it, your bad mood(情绪) will probably go away after some time. But with a little effort, you can forget it much faster--often within a day or two.

Walk it off

    Taking a fast ten-minute walk, or doing some quick exercises can help change the bad mood.

    Turn it out

    Listening to your favorite music for a while can also be very helpful because music makes us think of the happy experiences we've had.

    Give yourself a pen talk

    Stop and listen to what's on your mind. Bad moods are often started by too many negative(消极的) thoughts. Write them all down on paper and then give optimistic(乐观的)answers.

    Reduce your pressure

    Relax yourself. Deep breathe, and imagine. One easy way to imagine, close your eyes and picture a favorite place, such as the beach. Another simple way to deal with your bad mood is to make a to-do list. One reason for being in a bad mood is feeling you can't change anything. By controlling some areas, you realize you're not helpless. You can make changes in your mood and life.

    Keep away from those that won't improve your mood

    You need to make yourself more active. But remember that TV shows may not help much. And before you reach for that piece of cake and coffee, think about how mood and food are related. Sugar and coffee make moods worse.