mooc答案类别订阅

第1章单元测验

1、单选题：
关于网络营销，下列说法中错误的是（    ）‍‍​‍
选项：
A: 网络营销不是孤立存在的
B: 网络营销不是网上销售
C: 网络营销不等于电子商务
D: 网络营销就是建立企业网站
答案: 【 网络营销就是建立企业网站】点我阅读全文

n维向量单元测验

1、单选题：

‎

‌选项：
A:
B:
C:
D:
答案: 【 】点我阅读全文

1.1明治文学概述

1、单选题：
‎以下哪部作品决定了日本自然主义文学走向。‏‎‏
选项：
A: 《破戒》 
B: 《新世代》
C: 《耽溺》
D: 《棉被》
答案: 【 《棉被》】点我阅读全文

1.1.3解读英语学科核心素养之思维品质随堂测验

1、单选题：
1.教学设计时不包括（ ）‍
选项：
A: 教学内容分析 
B: 教学目标描述
C: 师生对话实录
D: 教学设计特点及教学反思
答案: 【 师生对话实录】点我阅读全文

思考题

1、单选题：
   生态退化是一个什么样的问题？
选项：
A:    地方性的问题
B:    区域性的问题
C:    全球性问题
D:    洲际性问题
答案: 【    全球性问题】点我阅读全文

旅游文化概述单元测验

1、多选题：
‎旅游文化的传承性，主要体现在（   ）上。‌‎‌
选项：
A: 物质层面
B: 制度层面
C: 观念层面
D: 心理层面
答案: 【 物质层面;
制度层面;
观念层面】点我阅读全文

第一周测验

1、单选题：
人感知的力主要可从 (    ) 来分类。‎​ ‎
选项：
A: 动物、植物、生物、非动/植/生物
B: 性质、效果、分析、物质界与非物质界
C: 有机物与无机物、效果、物质界与非物质界
D: 视觉、听觉、触觉、嗅觉；
答案: 【 性质、效果、分析、物质界与非物质界】点我阅读全文

单元测验1情为何物

1、单选题：
‌斯腾伯格的爱情三角形理论从心理学的角度能够帮我们更好地解读爱情，下列哪一项不是爱情三元论中的三元：‌‌‌
选项：
A: 亲密
B: 激情 
C: 承诺 
D: 迷恋
答案: 【 迷恋】点我阅读全文

第一讲测验

1、单选题：
‏Which of the following statements is NOT true about language?‍
选项：
A: Language is a sound system.
B: Language is a set of symbols.
C: Language must have both spoken form and written form.
D: Language is systemic.
答案: 【 Language must have both spoken form and written form.】点我阅读全文

Scanning

1、单选题：
‏Read the passage "The Discovery of X-rays" quickly and choose the paragraph(s) which contain(s) the answer(s). You may choose more than one answer for question 3. ‌‏‌The Discovery of X-rays‌‏ ‌Par. 1 Except for a brief description of the Compton effect, and a few other remarks, we have postponed the discussion of X-rays until the present chapter because it is particularly convenient to treat X-ray spectra after treating optical spectra. Although this ordering may have given the reader a distorted impression of the historical importance of X-rays, this impression will be corrected shortly as we describe the crucial role played by X-rays in the development of modern physics.‌Par. 2 X-rays were discovered in 1895 by Roentgen while studying the phenomena of gaseous discharge. Using a cathode ray tube with a high voltage of several tens of kilovolts, he noticed that salts of barium would fluoresce when brought near the tube, although nothing visible was emitted by the tube. This effect persisted when the tube was wrapped with a layer of black cardboard. Roentgen soon established that the agency responsible for the fluorescence originated at the point at which the stream of energetic electrons struck the glass wall of the tube. Because of its unknown nature, he gave this agency the name X-rays. He found that X-rays could manifest themselves by darkening wrapped photographic plates, discharging charged electroscopes, as well as by causing fluorescence in a number of different substances. He also found that X-rays can penetrate considerable thicknesses of materials of low atomic number, whereas substances of high atomic number are relatively opaque. Roentgen took the first steps in identifying the nature of X-rays by using a system of slits to show that (1) they travel in straight lines, and that (2) they are uncharged, because they are not deflected by electric or magnetic fields.‌Par. 3 The discovery of X-rays aroused the interest of all physicists, and many joined in the investigation of their properties. In 1899 Haga and Wind performed a single slit diffraction experiment with X-rays which showed that (3) X-rays are a wave motion phenomenon, and, from the size of the diffraction pattern, their wavelength could be estimated to be 10-8 cm. In 1906 Barkla proved that (4) the waves are transverse by showing that they can be polarized by scattering from many materials.‌Par. 4 There is, of course, no longer anything unknown about the nature of X-rays. They are electromagnetic radiation of exactly the same nature as visible light, except that their wavelength is several orders of magnitude shorter. This conclusion follows from comparing properties 1 through 4 with the similar properties of visible light, but it was actually postulated by Thomson several years before all these properties were known. Thomson argued that X-rays are electromagnetic radiation because such radiation would be expected to be emitted from the point at which the electrons strike the wall of a cathode ray tube. At this point, the electrons suffer very violent accelerations in coming to a stop and, according to classical electromagnetic theory, all accelerated charged particles emit electromagnetic radiations. We shall see later that this explanation of the production of X-rays is at least partially correct.‌Par. 5 In common with other electromagnetic radiations, X-rays exhibit particle-like aspects as well as wave-like aspects. The reader will recall that the Compton effect, which is one of the most convincing demonstrations of the existence of quanta, was originally observed with electromagnetic radiation in the X-ray region of wavelengths.‌‏‌‏When were X-rays discovered?‌
选项：
A: Par. 1
B: Par. 2
C: Par. 3
D: Par. 4
E: Par. 5
答案: 【 Par. 2】点我阅读全文