题目

教育部近日印发通知，明确初中生每天睡眠时间应达到9小时。其主要原因是人在睡眠状态下，垂体能分泌较多的促进生长发育的激素，这种激素是（ ）A．甲状腺激素B．胰岛素C．生长激素D．性激素 答案：【答案】C【解析】激素是指由内分泌腺或内分泌细胞分泌的高效生物活性物质，它通过调节各种组织细胞的代谢活动来影响人体的生理活动，对机体的代谢、生长、发育、繁殖、性别、性欲和性活动等起重要的调节作用。A．甲状腺素是由甲状腺分泌的，其作用是促进新陈代谢和发育，提高神经系统的It was 7:00 am in Paris,France,and the taxi company had just called a second time to say they couldn't find my house.Once again I spelt out____even a blind person could follow.I glanced____at my watch,and waited.Only two hours remained____my flight left—and it was one and a half hours'____to the airport.Outside,heavy rains were____.My house was so far north in the city that buses____only three times a day.The telephone rang again."Terribly sorry,"began the man at the taxi company.Then I realized that the taxi company,flooded with calls,could only____in-city runs.I had heard this happens when the____gets bad.I____ into the phone that I had a____to catch and I would meet the taxi outside my house.Standing in the wind-driven rain,I looked____the road.No taxi.A car went by,the driver and passenger staring at the____foreigner in the downpour.____a white car appeared and____to a stop.A young man threw open the door,waving to me to get in.Shaking with cold and____,I climbed in.In the most____French,the man said he was called Will,with whom I had spoken three times that morning.He had left his post in the office and____here in his personal car.He___ _again,but didn't explain why no taxi would pick me up____me straight to the airport,he refused the 2,000 franc I pressed into his hand.A few hours later,as the storm-delayed plane____,I opened the newspaper.On the second page my eyes caught the headline of a short article: Taxi Strike Begins This Morning in Paris.1.A. house B. directions C. surroundings D. field2.A. aimlessly B. hopelessly C. cautiously D. impatiently3.A. before B. after C. unless D. when4.A. visit B. experience C. ride D. distance5.A. falling down B. pouring down C. putting down D. turning down6.A. pass B. rush C. take D. travel7.A. allow B. permit C. offer D. afford8.A. climate B. condition C. season D. weather9.A. whispered B. threatened C. shouted D. forced10.A. ship B. plane C. train D. bus11.A. again and again B. now and then C. up and down D. here and there12.A. crazy B. amazing C. awesome D. energetic13.A. Immediately B. Finally C. Permanently D. Constantly14.A. arrived B. pushed C. continued D. pulled15.A. curiosity B. fear C. excitement D. anger16.A. fluent B. usual C. polite D. formal17.A. fled B. escaped C. attempted D. raced18.A. commented B. apologized C. admitted D. insisted19.A. Fetching B. Bringing C. Delivering D. Driving20.A. took off B. set off C. broke off D. knocked off