问题
单项选择题
当代自然法学理论的内容不包括（）
A.自然法是宇宙规律
B.自然法是人的尊严
C.自然法包含道德内容
D.自然法是社会制度的公正
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
当代自然法学理论的内容不包括（）
A.自然法是宇宙规律
B.自然法是人的尊严
C.自然法包含道德内容
D.自然法是社会制度的公正
参考答案：A
某生物兴趣小组通过制作小型生态瓶模拟简单的池塘生态系统，该生态瓶中有水、沙土、小球藻、虾、水蚤、小鱼、河蚌．它们的取食关系是：水蚤以小球藻为食，小虾以水蚤为食，鱼可食小虾和小球藻．河蚌可食水蚤和小球藻．
（1）该生态系统的能量流动是从小球藻通过______作用固定太阳能开始．
（2）根据以上取食关系，请写出该生态系统中最长的一条食物链：______．
（3）为进行生态系统稳定性的探究实验，该兴趣小组的同学进一步设计了如下四个生态瓶（瓶中各种生物的数量、大小和生活状态基本一致）：
| 编号 | 外界环境 | 生物成分 | 非生物成分 |
| 甲瓶 | 黑暗 | 小球藻、虾、小鱼、河蚌、水蚤 | 4/5瓶水、少量沙土 |
| 乙瓶 | 阳光 | 虾、小鱼、河蚌、水蚤 | 4/5瓶水、少量沙土 |
| 丙瓶 | 阳光 | 小球藻、虾、小鱼、河蚌、水蚤 | 4/5瓶水、少量沙土 |
| 丁瓶 | 阳光 | 小球藻、虾、小鱼、河蚌、水蚤 | 4/5瓶水 |
②在探究生产者对生态系统稳定性的影响时，丙瓶和______瓶可作为一组对照实验．
| 完形填空。 | |||
| Paul received an expensive car from his brother as a Christmas present. On Christmas Eve when Paul came out of his office, a street boy was 1 the shining car. “Is this your car, Paul?” he asked. Paul 2 , “My brother gave it to me for Christmas.” The boy was astonished. “You mean your brother gave it to you and it cost you 3 ? Paul, I wish…” he hesitated. Of course Paul knew he was going to wish he had a 4 like that. But what the boy said surprised Paul greatly. "I 5 ", the boy went on, "that I could 6 a brother like that."Paul looked at the boy 7 , then he said. "Would you like to take a ride in 8 car?" "Oh, yes. I’d love that." After a short 9 , the boy turned and with his eyes shining, said, “Paul, would you mind driving in front of my 10 ?” Paul smiled a little. He knew he wanted to show his 11 that he could ride home in a big car. But Paul was 12 again. “Will you stop where those two steps are?” the boy asked. He ran up to the steps. 13 in a short while Paul heard him coming back, but he was coming 14 . He was carrying his little brother disabled in one leg. He sat him down on the step and 15 the car. "There he is, Buddy, just like I told you 16 . His brother gave it to him for Christmas and it didn’t cost him a cent. And 17 I’m going to give you one just like it…, then you can see by yourself all the 18 things in the Christmas window that I’ve been trying to tell you about.” Paul got out and 19 the boy to the front seat of his car. The 20 older brother climbed in beside him. The three of them began an unforgettable holiday. | |||
| ( )1.A. escaping from ( )2.A. compromised ( )3.A. nothing ( )4.A. brother ( )5.A. doubt ( )6.A. be ( )7.A. in return ( )8.A. our ( )9.A. break ( )10.A. school ( )11.A. co-workers ( )12.A. shy ( )13.A. Even ( )14.A. quickly ( )15.A. shouted at ( )16.A. downstairs ( )17.A. at a time ( )18.A. ugly ( )19.A. lifted ( )20.A. broken-hearted | B. running into B. disagreed B. anything B. sister B. wish B. have B. in surprise B. their B. try B. shop B. neighbors B. happy B. Yet B. slowly B. looked for B. upstairs B. at times B. nice B. rushed B. heavily-built | C. jumping off C. nodded C. something C. father C. explain C. cheat C. out of respect C. my C. walk C. office C. classmates C. wrong C. Thus C. sadly C. pointed to C. publicly C. another day C. religious C. pushed C. shining-eyed | D. walking around D. insisted D. everything D. mother D. suspect D. share D. out of breath D. his D. ride D. house D. teachers D. right D. Then D. silently D. rested on D. repeatedly D. some day D. cultural D. pulled D. mentally-challenged |