题目

蔡伦改进造纸术的主要突破点是（   ） A . 由笨重改进为携带方便 B . 简化制作过程 C . 使造纸原料容易得到而又便宜 D . 纸张由粗糙改进为精细 答案：C"Hurry up, Dad! Jane and I are ready." Harry called out."I will be late if I drive you to school," Mr Smith said."Can't you go to school on foot this morning? .... But the schoolis far away!" Jane said."Walking is a good way to keep healthy, children. Now getyour schoolbags and go!"So Jane and Harry had to walk five blocks to school finally.In the evening, the children told their grandpa that theywalked to school that morning. Grandpa said, "That was goodfor you. When I was young, I walked five kilometres to schoolevery day." Jane said, "But I hate walking." Grandpa said,"Children should walk and run every day. If you do so, you willbecome stronger and stronger. You won't get sick so often.""From now on I'll start walking every day," Harry said, "I'd like to be healthy and strong.""I will join you, Harry," Jane said.1.Harry and Jane went to school this morning.A. on foot B. by bike C. by car D. by bus2.The children walked to school that day.A. five blocks B. five kilometresC. three blocks D. three kilometres3.Who hates walking?A. Harry. B. Jane.C. Their father. D. Their grandfather.4.How did their grandfather usually go to school?A. By bus. B. By car. C. By train. D. On foot.5.Walking is a good way to according to their grandpa.A. get to school B. get to workC. have fun D. keep healthy