mooc答案类别订阅

在线测试1

1、单选题：
‏将一个生活细胞放入与其渗透势相等的糖溶液中，则会发生（ ）。‍‏‍
选项：
A: 细胞吸水
B: 细胞失水
C: 细胞既不吸水也不失水
D: 不确定
答案: 【 不确定】点我阅读全文

随堂测试1

1、单选题：

‌

‌

‌静止在不同位置的两个等量同号的点电荷，在它们中垂线上一点p产生的静电场电场强度的方向和大小分别为

‌选项：
A: 沿着中垂线的方向，大小为两电荷分别在p点产生的场强大小E之和
B: 沿着中垂线的方向，大小不等于两电荷分别在p点产生的场强大小E之和
C: 垂直于中垂线的方向，大小为两电荷分别在p点产生的场强大小E之和
D: 垂直中垂线的方向，大小不等于两电荷分别在p点产生的场强大小E之和
答案: 【 沿着中垂线的方向，大小不等于两电荷分别在p点产生的场强大小E之和】点我阅读全文

1.1 纪录之辩与影像初记

1、单选题：
‏1. 发现了“视觉暂留”原理的科学家是谁?‎
选项：
A: 约瑟夫·普拉托
B: 尼埃普斯
C: 雷诺
D: 达盖尔
答案: 【 约瑟夫·普拉托】点我阅读全文

项目一企业纳税基础单元测验

1、单选题：
​一般认为，税收是国家凭借（  ）参与社会产品的分配。‌
选项：
A: 政治权利
B: 经济权利
C: 所有者权利 
D: 财产权利
答案: 【 政治权利】点我阅读全文

单元测验1

1、单选题：
‌孔子主张，古之学者（    ）。‌‌‌
选项：
A: 为己
B: 为人
C: 为父母
D: 为国家
答案: 【 为己】点我阅读全文

小测验1.1

1、单选题：
计算机本身最擅长的能力是？
选项：
A: 推理
B: 想像
C: 重复
D: 分析
答案: 【 重复】点我阅读全文

第1单元测验 Unit 1 Test

1、单选题：
 In which of the following media can conservative voices most likely be heard in the US?‏‍‏
选项：
A: CNN
B: Fox News
C: NBC
D: ABC
答案: 【 Fox News】点我阅读全文

第一章检测

1、单选题：
​下列关于流体质点的说法中正确的是（      ）‏
选项：
A: 流体质点的尺寸是固定的
B: 根据连续介质模型，组成流体的最小物质实体是流体质点
C: 流体质点一般不具有确定的宏观统计特性
D: 流体质点是实际存在的
答案: 【 流体质点一般不具有确定的宏观统计特性】点我阅读全文

任务1认识数控铣削加工机床与相关工量夹具(1)

1、单选题：
‎数控铣床按主轴的方向可分为（    ）两种‎
选项：
A: Z坐标和C坐标
B: 经济性、多功能
C: 立式和卧式
D: 移动和转动
答案: 【 立式和卧式】点我阅读全文

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