小站备考
托福
托福阅读
mock test 1阅读

MOCK TEST 1 Select the sentence in the passage that highlights the benefits of solving the mystery of dark matter.

展开
The Mysteries of Dark Matter
Tip:单击查看句义;划选/双击查生词
Dark matter, an elusive and invisible substance, makes up about 27 percent of the universe’ mass. Unlike ordinary matter, dark matter does not emit, absorb, or reflect light, making it undetectable by conventional telescopes. Its existence is inferred from its gravitational effects on visible matter, such as stars and galaxies.

Evidence of dark matter emerged in the 1930s when astronomer Fritz Zwicky saw that galaxies in clusters were moving faster than expected. In the 1970s, Vera Rubin's work on galaxy rotation curves provided further support. She found that stars at the edges of galaxies were rotating as fast as those near the center, which defied Newtonian physics unless an unseen mass was present.

Despite extensive research, the composition of dark matter remains a mystery. Scientists have proposed candidates like weakly interacting massive particles (WIMPs) and axions, but none have been conclusively detected. Advanced experiments and observations continue to search for dark matter particles and aim to understand their properties. If successful, discovering dark matter's true nature could revolutionize our understanding of the universe's structure and evolution. Until then, it remains an enigma that challenges scientists to push the boundaries of knowledge and technology.

4.Select the sentence in the passage that highlights the benefits of solving the mystery of dark matter.
你的答案:
正确答案:C
题目解析:
 后才能查看题目解析,还没有账号? 马上注册
1. 题干:Select the sentence in the passage that highlights the benefits of solving the mystery of dark matter. 选择文章中强调解决暗物质之谜的好处的句子。 2. 分析:题目类型:信息查找题。解题策略:题目要求找到“强调解决暗物质之谜的好处”的句子。关键信息是“benefits”(好处),需要寻找描述“如果解决了会怎样”或“解决它意味着什么”的句子。 3. 定位信息理解:句子1定义暗物质及其占比。句子2 说明暗物质与光的相互作用使其无法被探测。句子3 说明暗物质的存在是通过引力效应推断的。句子4提供暗物质存在的历史观测证据(兹威基和鲁宾的工作)。 4. 分析选项:在这四个句子中,答案为c。隐含逻辑是“理解暗物质的存在可以帮助解释宇宙现象”。

学习页面

Medi

terr

anean

加强 + 政府 + 名词后缀

加强的政府——管理

原文例句

加入生词

本文生词 0

色块区域是你收藏过的生词;

查询次数越多,颜色越深哦~

显示文中生词

登录后才能收藏生词哦,现在登录注册>

本文重点词 45

文中加粗单词为本文重点词;

根据词频与核心词范围精心挑选,托福考试必掌握词汇。

显示文中重点词
学习本文词汇

文中划选/双击的生词、加粗重点词已收纳至词盒

可随时点击词盒查看哦~

只有在词句精学模式下才能开启词盒功能哦~

我知道了

词盒
收藏
笔记
我的笔记
5000
保存
反馈