慕课标签存档订阅

1. 猪与人类

1、单选题：
‌以下观点正确的是‎
选项：
A: 猪是草食动物
B: 猪是杂食动物
C: 猪是肉食动物
D: 以上都不对
答案: 【 猪是杂食动物】点我阅读全文

1.1 微分方程的基本概念练习题

1、单选题：

‍已知,（为任意常数）是微分方程的通解，则满足初始条件的特解为？

‌选项：
A:
B:
C:
D:
答案: 【 】点我阅读全文

Test

1、判断题：
Directions: select the correct English expression corresponding to each of the following Chinese phrases. ‏‏‍找借口‏‏find an excuse　‏
选项：
A: 正确
B: 错误
答案: 【 错误】点我阅读全文

Academic Writing & Critical Thinking

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

小测验

1、填空题：
写出以下代码执行后，t1和t2的值，以空格隔开：‏int a=14;‏int t1 = a++;‏int t2 = ++a;‏
答案: 【 14 16】点我阅读全文

循证医学概论测验

1、单选题：
‌关于循证医学，以下哪项陈述是错误的‏
选项：
A: 临床实践需要最佳的临床研究证据
B: 循证医学的首要步骤是获取证据
C: 现有最好的证据需来自科学研究
D: 与临床实践直接相关的证据来自病人或者人群的科学研究
E: 对于高质量的研究证据无需评价其适用性
F: 证据可以解决所有临床问题
G: 患者无需参与临床决策
答案: 【 循证医学的首要步骤是获取证据;
对于高质量的研究证据无需评价其适用性;
证据可以解决所有临床问题;
患者无需参与临床决策】点我阅读全文

第一讲单元测试

1、单选题：
‍下列文献中，哪个不属于教育文献？‎
选项：
A: 《我国西部地区公民终身学习的现状、需求与对策研究——以陕西省调查数据为例》
B: 《中国电化教育》
C: 《追求理解的教学设计》
D: 《电磁组技术报告》
答案: 【 《电磁组技术报告》】点我阅读全文

程序设计基本概念复习测验

1、单选题：
​Which of the following must every C program have?‏
选项：
A: main
B: #include
C: /*
D: <stdio.h>
答案: 【 main】点我阅读全文

振波与波动部分测验

1、单选题：

一物体作简谐振动，振动方程为，则该物体在时刻的动能与（为振动周期）时刻的动能之比为 

‎

​

‎选项：
A: 1:4
B: 1:2
C: 2:1
D: 4:1
答案: 【 2:1】点我阅读全文

第一讲 单元测验

1、判断题：
​四分之二拍表示以四分音符为一拍每小节4拍。‎
选项：
A: 正确
B: 错误
答案: 【 错误】点我阅读全文