第二节 阅读填空(每小题1分，共5分)
The Moon is the Earth's closest neighbour in space. It travels around our planet, and we can see it shining brightly in the night sky. 51. What we see is actually sunlight reflecting off its surface, much like a mirror.
The Moon is much smaller than the Earth. Its diameter is only about one quarter of the Earth's. 52. This means that if you could stand on the Moon, you would weigh much less and be able to jump much higher!
53. It's covered with thousands of holes called craters. They were formed over billions of years when rocks from space crashed into the Moon.
The lack of atmosphere on the Moon means there's no air to breathe and no weather like we have on Earth. It's extremely hot during the day and freezing cold at night. There's also no liquid water on the surface. 54.
Though there are many challenges, humans have landed on the Moon successfully. Today, scientists continue to study the Moon to learn about how it was formed and how it has changed over time. 55.
A. The surface of the Moon looks quite different from the Earth's.
B. However, the Moon doesn't create its own light like the Sun does.
C. As a result, it is impossible for humans to exist there.
D. Besides, the gravity on the Moon is only one-sixth of the gravity on Earth.
E. The Moon remains a wonderful place to help us explore the solar system.

51.B 52.D 53.A 54.C 55.E

【分析】本题为英语阅读填空题，需结合上下文的逻辑关系（转折、因果、指代等）匹配选项。先通读全文把握每段主旨，再逐一分析每个空前后句的内容：51空需对应月亮不发光的特点，52空对应月亮重力与体重的关系，53空对应月亮表面与地球的差异，54空对应无大气等导致的结果，55空对应总结月亮的探索价值，据此匹配选项。
【解析】1. 51空：前句提到能看到月亮发光，后句说明是反射阳光，转折关系表明月亮本身不发光，对应B选项；2. 52空：后句提到站在月亮上体重轻，需解释原因，D选项说明月亮重力是地球的六分之一，符合逻辑；3. 53空：后句描述月亮表面有陨石坑，A选项引出月亮表面与地球不同，衔接自然；4. 54空：前句说明月亮无大气、水，C选项指出人类无法生存，是前文的结果；5. 55空：前句提到科学家研究月亮，E选项总结月亮对探索太阳系的价值，符合语境。
【答案】51.B 52.D 53.A 54.C 55.E
【知识点】英语阅读填空（语篇逻辑）
【点评】本题考查学生对英语语篇逻辑衔接的理解能力，要求结合上下文的逻辑关系匹配选项，难度适中，需学生理清句子间的逻辑联系。
【难度系数】0.6