.如图所示，物体沿x轴做直线运动，从A点运动到B点。由图判断A点坐标、B点坐标和走过的路程。
–_______________ does a CRH train run? –It runs up to more than 300 km an hour.
You shouldn’t keep a pet _______________ you have enough time to care for it.
___________ the young girl ___________ her parents take regular exercise in order to keep fit.
Generally speaking, a computer works _______________ a human brain.
Nowadays, children under 1.4 meters _______________ be free to take buses in some cities.
路程。
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