mooc答案类别

第1单元 电子商务概述

随堂测验

1、单选题：
‎下面关于电子商务产生的原因叙述不正确的是（  ）。​
选项：
A: 市场竞争的加剧
B: 信息技术和网络技术的发展
C: 快递服务业的发展
D: 全球贸易自由化的发展
答案: 【 快递服务业的发展】点我阅读全文

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第一周绪论

1.1有机化合物和有机化学随堂测验

1、单选题：
‌下列化合物中，不是有机化合物的是（        ）  ‌
选项：
A: 叶绿素
B:  氯仿   
C: 尿素  
D:  氨气
答案: 【  氨气】点我阅读全文

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第一章绪论

第一章绪论测试

1、单选题：
‎采用负反馈形式连接后，则‌
选项：
A: 一定能使闭环系统稳定
B: 系统动态性能一定会提高
C: 一定能使干扰引起的误差逐渐减小，最后完全消除
D: 需要调整系统的结构参数，才能改善系统性能
答案: 【 需要调整系统的结构参数，才能改善系统性能】点我阅读全文

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第一章 毛泽东思想及其历史地位

1.1 毛泽东思想的形成和发展随堂测试

1、单选题：
‎毛泽东思想被正式确立为党的指导思想的会议是在(     )上‌
选项：
A: 遵义会议
B: 党的七大
C: 党的八大
D: 党的六届七中全会
答案: 【 党的七大】点我阅读全文

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第一周 第1章 绪论

第1周知识测验

1、单选题：
‍上图中局部约束在哪点：（  ）‌
选项：
A: F
B: B
C: C
D: E
答案: 【 F】点我阅读全文

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第1讲 金融风险管理概述

第1讲 测试题

1、单选题：
‎以下关于金融风险的表述错误的是（   ）。‎
选项：
A: 金融风险是金融活动的内在属性
B:   不确定性是金融风险产生的根源
C: 不确定性是风险的必要且充分条件
D: 金融风险具有客观性和普遍性
答案: 【 不确定性是风险的必要且充分条件】点我阅读全文

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Lesson1

AcademicWriting&CriticalThinking

1、单选题：
Read the following passage about Zoos and answer the questions.‍‍Zoos have existed in some form since at least 2500 BC in Egypt and Mesopotamia, where records indicate giraffes, bears, dolphins, and other animals were kept by aristocrats. The oldest still operating zoo in the world, Tiergarten Schönbrunn in Vienna, opened in 1752. Although controversy has historically surrounded zoos, from debates over displaying "exotic" humans in exhibits to zookeepers not knowing what to feed animals, I do believe that zoos should exist. ①In my opinion, zoos are important institutions that promote scientific research and public education, and save animals from extinction.‍First of all, zoos produce helpful scientific research. Since so many diseases can be transmitted from animals to humans, such as Ebola and the bird flu, zoos frequently conduct disease surveillance research in wildlife populations and their own captive populations that can lead to a direct impact on human health. Take the zoos in the United Stated as an example. In 2017, 173 accredited US zoos spent $25 million on research, studied 485 species and subspecies of animals, worked on 1,280 research projects, and published 170 research manuscripts.‍②Zoos can also educate the public about animals and conservation efforts. According to a study of 26 zoos worldwide published in Conservation Biology, visitors to zoos increased their knowledge of biodiversity and specific individual actions to protect biodiversity. Robin Ganzert, PhD, President and CEO of American Humane, once stated, "Zoos provide people, especially impressionable children, with the opportunity to see these remarkable animals up close. People won't protect what they don't love, and they can't love what they don't know.” ③It is zoos that give people the chance to appreciate the animals from different corners of the world in real life.‍In addition, zoos help save species from extinction and other dangers. According to records, there were only nine California condors in the wild in 1985. ④However, a joint conservation effort between the San Diego and Los Angeles Zoos with other organizations resulted in a population of 276 California condors in the wild and another 170 in captivity by 2016. The truth is that zoos are working to save polar bears, tigers, and wild African elephants from habitat loss, apes and rhinos from poachers, dolphins and whales from hunters, and bees and butterflies from population declines, among many other efforts to help many other animals.‍In conclusion, zoos do bring a lot of benefits to mankind and thus have a reason to exist. No matter in the promotion of scientific research and public education or in the save of animals from extinction, they have indeed made a huge difference.‍ ‍1. What is the main argument of the author?‍
选项：
A: Zoos should exist.
B: Zoos help save species from extinction and other dangers.
C: Zoos can promote scientific research and public education, and save animals from extinction.
D: Zoos should exist because they can help promote scientific research and public education, and save animals from extinction.
答案: 【 Zoos should exist because they can help promote scientific research and public education, and save animals from extinction.】点我阅读全文

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1.绪论

第一章单元测试

1、多选题：
1． 信息论研究的目的就是要找到信息传输过程的共同规律，以提高信息传输的_________，使信息传输系统达到最优化。‎​‎
选项：
A: 可靠性    
B: 有效性
C: 保密性
D: 认证性
答案: 【 可靠性    ;
有效性;
保密性;
认证性】点我阅读全文

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第5章 脂质

脂质

1、单选题：
​‌​脂肪酸是指天然脂肪水解得到的脂肪族（）羧酸。‌
选项：
A: 一元
B: 二元
C: 三元
D: 多元
答案: 【 一元】点我阅读全文

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Unit2JobsandResponsibilities

QuizforUnit2

1、单选题：
If the ownership of the companies is not open to the public, we call them _______. ​
选项：
A: A. closely held companies   
B: B. publicly held companies 
C: C. private company        
D: D. multinational companies
答案: 【 A. closely held companies   】点我阅读全文

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