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MOCK TEST 9 The word "discrepancy" in the second paragraph is closest in meaning to

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The Mystery of Dark Matter
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Dark matter is one of the biggest mysteries in modern astrophysics. It does not emit, absorb, or reflect light, making it invisible and difficult to detect. However, scientists infer its existence through its gravitational effects on visible matter, such as stars and galaxies.

Dark matter is believed to make up approximately 27% of the universe, while visible matter accounts for only about 5%. The remaining 68% is dark energy, another enigmatic component of the cosmos. The concept of dark matter was first proposed in the early twentieth century when astronomers observed that galaxies were rotating faster than could be explained by the visible matter alone. This discrepancy suggested that an unseen mass was influencing the galaxies' movements.

Since then, various theories have emerged to explain dark matter, including the possibility of undiscovered particles. Despite extensive research, dark matter remains elusive. Scientists use sophisticated instruments like the Large Hadron Collider to search for evidence of these hidden particles. Some researchers believe that dark matter could consist of weakly interacting massive particles (WIMPs) while others think it might be composed of axions or neutrinos. Understanding dark matter is crucial for grasping the fundamental nature of the universe.

4.The word "discrepancy" in the second paragraph is closest in meaning to

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正确答案:A

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"1. 题干 题干:第二段中 “discrepancy” 一词的意思最接近哪个选项?(原文:The word ""discrepancy"" in the second paragraph is closest in meaning to) 2. 分析 题目类型:词汇题 解题策略:此题需要结合上下文语境推测单词含义,解题关键是理解 “discrepancy” 所指代的具体内容。 3. 定位信息理解 原文定位:第二段提到:“astronomers observed that galaxies were rotating faster than could be explained by the visible matter alone. This discrepancy suggested that an unseen mass was influencing the galaxies' movements.” 信息理解:“discrepancy” 指代的是 “星系实际旋转速度” 与 “仅由可见物质能解释的旋转速度” 之间的差异。 4. 分析选项 (A) difference(差异) 分析:与 “discrepancy” 在语境中 “速度实际值与理论值的差异” 的含义完全匹配,此为正确答案。 (B) interaction(相互作用) 分析:“interaction” 是 “相互作用”,与 “差异” 无关,排除。 (C) collapse(坍塌) 分析:“collapse” 是 “坍塌”,与语境无关,排除。 (D) emergence(出现) 分析:“emergence” 是 “出现”,与 “差异” 无关,排除。"

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