题目

某医药研究所开发了一种新药，在实验药效时发现，如果成人按规定剂量服用，每毫升血液中含药量y（微克）随时间x（时）的变化情况如图所示，那么当成人按规定量服药后，根据图象回答下列问题： （1） 服药小时，血液中含药量最高，达到每毫升微克，接着逐步衰减.服药后5小时，血液中含药量每毫升微克. （2） 如果每毫升血液中含药量为3微克及以上时治疗疾病有效.某老师要在上午8：00~11：30之间参加活动，则该老师在哪个时间段内阅读理解。     This is a room in Kate's house. There is a big bed, a table, a computer and some chairs in it. There's a glass and some books on the table. There is a picture on the wall. Kate is in the room. She is looking at the picture. Her father and mother are in the school. They work hard. 1. Is there only one room in Kate's house? 　　A. Yes, there is. B. There is a bed. C. There is a computer. D. I don't know. 2. What's in the room? 　　A. Only a bed. B. Only a table. 　　 C. Only some chairs. D. A bed, a table, a computer and some chairs. 3. Is there anything on the table?A. Yes, there is. B. No, there isn't. 　 C. Some books. D. A glass. 4. Who is at home? 　　 A. Kate's father. B. Kate's mother. 　C. Kate's brother. D. Kate. 5. Kate's father and mother are _____. 　　 A. teachers B. students C. friends D. at home