题目

关于海陆分布的特点，描述正确的是（ ）A. 地球表面79%是海洋，而陆地面积仅占21%B. 北极地区是一片陆地，南极地区是一片海洋C. 无论把地球如何划分为两个相等的半球，陆地的面积始终小于海洋的面积D. 地球上的海洋，被陆地分割成彼此不相连的四个大洋 答案：【答案】C【解析】关于海陆分布的特点，地球表面71%是海洋，而陆地面积仅占29%；北极地区是一片海洋，南极地区是一片陆地；无论把地球如何划分为两个相等的半球，陆地的面积始终小于海洋的面积；地球上的海洋，是连为一体的四个大洋，故选C。People make traffic   1  to keep order(维持秩序)on the road. The traffic rules also help to keep people   2  .People have to   3  many traffic rules. You must walk on the sidewalk or on the   4  of the road in China. Look both ways carefully   5  you walk across the street. If you like   6   a bike, don’t ride in the middle of the road or run through(闯)red traffic lights. When you ride a bike with a friend,   7  look around and talk. If you drive a car or a bus, you must   8   at traffic lights. You must always take a seat belt(安全带). Without belts, the driver and the passengers may be badly   9   in a sudden accident. If you travel by bus, get on or get off a bus only when it comes to a   10  , When it’s full ,don’t try to get inside, or you may fall off.小题1:A．accidentsB．rulesC．lightsD．order小题2:A．noisyB．safeC．happyD．danger小题3:A．obeyB．breakC．takeD．make小题4:A．middleB．leftC．endD．right小题5:A．beforeB．afterC．whenD．while小题6:A．rideB．ridesC．to rideD．riding小题7:A．notB．don’tC．can’tD．needn’t小题8:A．speed up(加速)B．go straight C．slow down(减速)D．go through the red light小题9:A．safeB．afraidC．hurtD．worried小题10:A．stopB．sighC．cornerD．school