问题
单项选择题
生态系统中的物质流.能量流.信息流始终处于（）状态，没有这种状态，机体和系统的有序性就无从实现.
A.相干
B.相离
C.平行
D.重复
答案
参考答案：A
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生态系统中的物质流.能量流.信息流始终处于（）状态，没有这种状态，机体和系统的有序性就无从实现.
A.相干
B.相离
C.平行
D.重复
参考答案：A
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| Two friends and I moved into a house off campus when I was a junior at Iowa State University. We were all a bit 1 of our landlord, a rough middle-aged man. He gave us a lecture about paying the 2 on time and maintaining the house and appliances. During the fall semester, my housemates and I threw a 3 . We sent invitations to many friends and told everyone to come to our house on Friday night. We 4 a large crowd and everyone had a great 5 . The last guests left in the wee (凌晨一两点) hours of the morning. Exhausted, we decided to sleep in and clean the house and yard the next morning. Well, you 6 it! We were awakened about 7:00 a.m. by our 7 , who was knocking on the door. Sleepily, we let him in, 8 to incur his wrath (招致他的怒气). Instead, he picked up a party invitation that had been 9 on the sidewalk and asked, "Why didn't you girls invite me?" He came into the house, 10 a minor repair, and spent a few minutes helping us pick up trash from the yard. We weren't quite sure what use to make of our unexpected luck, but we were thrilled that our landlord had been so 11 . A few months later, I made a mathematical error while balancing my checkbook and my bank soon informed me that I had bounced (跳过) a 12 . I was ashamed when I discovered that it was my rent check and 13 I had to let my landlord know. I figured that he 14 my housemates and I as irresponsible after the party incident and this would 15 him right. I was certain that he would drive me away. 16 , I gathered the courage to call him and explained what had happened. He said, "I have a daughter about your age, and the same thing happened to her 17 . Would you like to wait until next month and send a 18 payment then?" I've never forgotten our landlord's kindness and understanding. He also taught me an important lesson about not judging a book by its 19 . I'm proud to say that I have not bounced a check 20 (though I have thrown a few more parties)! | ||||
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