题目

将一株长势良好的大豆植株置于密闭玻璃罩内培养，并置于室外，用CO2测定仪测定玻璃罩内CO2浓度在一昼夜的变化情况，绘成曲线如图甲所示。图乙表示温度等条件皆适宜，光照强度与该植株CO2吸收量或释放量的关系。请据图回答下列问题：（1）图甲中，表示该大豆植株积累有机物的时间段是_______，A点与E点相比，大豆植株内有机物的含量________（多、相同、少）。（2）图甲中，14时受限制的主要是光合作用的___________阶段，（3）18时，温室常采用补I still remember the true story that happened to me many years ago. It started while my family were on vacation. Vacations should be relaxing, but I needed to do some studying. I carefully put all my important papers and books in a large bag.After a long drive to New York, we found a motel, a place for travelers and their cars, with a really good price. So we decided to stay there for a week. On the second day, after visiting some interesting places and having a big dinner, we returned to the motel. It was about ten o’clock in the evening, and I wanted to study. However, I couldn’t find my paper bag anywhere. I was quite sure that I had put it in the room. Suddenly, I realized the cleaner had taken it out with the rubbish.I ran over to the main office, and asked if I could talk to the cleaner on duty that day. They told me all the cleaners had left for the day. They showed me where the rubbish bins were instead of offering me any help. I walked out of the motel with a flashlight (电筒). I saw three large rubbish bins standing in the dark. 1 had to look for my bag very carefully. But I didn’t have any luck. I almost wanted to give up. When I took another look into the last bin, I saw my bag right on its top! I was never so happy to see such a dirty old bag in my life!回答下面5个问题，每题答案不超过6个单词。【1】What did the writer have to do during the vacation?_____________________________________________________【2】Where did the writer put his important papers and books before leaving for New York?_____________________________________________________【3】Why did the writer and his family decide to stay at the motel for a week?____________________________________________________【4】Who did the writer think took his paper bag according to the passage?____________________________________________________【5】How did the writer succeed in finding his bag in the end?____________________________________________________