一、小明对火星感兴趣，他分享的未解之谜也与此有关。从下面的方框中选出10个单词，将其正确形式填入短文，使短文意思正确、语句通顺。（每词限用一次）
writing hardly interest planet know alive
argue explore whether finding with prize
One of the most 1. unsolved mysteries(奥秘) is 2. there is life on Mars. As our nearby 3. , Mars has interested people for hundreds of years, and we have 4. stopped looking for its secrets.
There is a common belief that Mars might have had living things long ago. Scientists have made an important 5. : there are signs of water on Mars, which is necessary for life. But we cannot fully prove life existed(存在) there before, let alone that any creatures are 6. now because Mars’ environment has changed a lot.
There has been an endless 7. about this mystery among scientists. Some think Mars’ old environment was fit for life, so simple living things may have lived there. They built a clear model of Mars’ past to support their beliefs.
8. the development of space technology, we are getting closer to the truth of Mars. But for now, if life ever belonged to this planet is still 9. , which encourages us 10. the big universe for answers.

1. interesting
2. whether
3. planet
4. hardly
5. finding
6. alive
7. argument
8. With
9. unknown
10. to explore

我们结合句意、语法规则和固定搭配逐空分析：
1. 此处修饰名词unsolved mysteries，需将名词interest变为形容词interesting，意为“有趣的”，构成“one of the most interesting unsolved mysteries”表示最有趣的未解之谜之一。
2. 此处引导表语从句，表达“是否火星上存在生命”的含义，用引导词whether。
3. 句意为“作为我们附近的行星”，planet意为“行星”，符合火星的属性，直接用原形。
4. 此处表达“我们几乎从未停止探寻它的秘密”，副词hardly意为“几乎不”，符合语境。
5. 固定搭配make an important finding表示“有一项重大发现”，finding是对应名词形式，意为“发现”，符合后文提到火星有水的迹象的语境。
6. 此处表达“更别说现在还有任何生物是存活的”，形容词alive意为“活着的”，作表语，符合语境。
7. 此处表达“科学家们关于这个谜团一直有无尽的争论”，需将动词argue变为名词argument，意为“争论”。
8. 固定搭配with the development of...表示“随着……的发展”，单词位于句首首字母大写，填With。
9. 此处表达“生命是否曾经存在于这颗星球上仍然是未知的”，需将动词know变为形容词unknown，意为“未知的”，作表语。
10. 固定搭配encourage sb. to do sth.表示“鼓励某人做某事”，此处表达“鼓励我们探索广阔的宇宙寻找答案”，填to explore。

二、小红介绍的未解之谜藏在三星堆遗址中，让我们一起来学习一下吧！阅读下面的短文，从短文后的A~F选项中，选出5个适当的选项补全短文。
Accidental(意外的) discoveries have often opened the door to beauty and wonder, such as the Sanxingdui(三星堆) Ruins in Sichuan Province. 1. They were known as the “Ninth Wonder of the World” by many people.
People have found more than 15,000 old objects there. These things are very old, from 5,000 to 3,000 years ago, including gold, pottery(陶瓷), tools made from bones, and ivory. 2. In fact, it was exactly the heart of the ancient Shu Kingdom.
The most surprising discoveries at the Sanxingdui Ruins site are the bronze(铜) pieces. One amazing piece is a very thin gold mask that is only 0.2 mm thick. 3. Scientists believe that these skills have been lost.
There are many mysteries about Sanxingdui. 4. Many people wonder if they
used a different writing method. Or maybe they depended on(依靠) telling stories from one to the other to pass down things.
The Sanxingdui Ruins site shows us how creative ancient people were. 5. Its secrets continue to draw researchers' attention. Let's wait and see what will be found.
A. They look like golden-faced human heads.
B. It also reminds us of the rich past of humans.
C. One of them is that people found no writings.
D. It shows ancient Chinese people's great skills.
E. These show that a great ancient city once stood here.
F. They were discovered by a farmer in 1929 by accident.

1.F 2.E 3.D 4.C 5.B

我们逐空结合上下文逻辑分析：
1. 空1前文引出三星堆是意外发现的典型例子，F选项介绍三星堆是1929年被农民意外发现，呼应开头的"意外发现"主题，自然引出后文它被称为"世界第九奇迹"的内容，符合语境。
2. 空2前文列举了三星堆出土的上万件年代久远的各类文物，E选项的These指代前文所有出土文物，说明这些文物证明此处曾存在一座伟大的古城，和后文"它正是古蜀国的核心"衔接自然。
3. 空3前文介绍了厚度仅0.2毫米的超薄黄金面具，D选项指出这件文物体现了古代中国人高超的技艺，和后文"科学家认为这些技艺已经失传"中的skills形成对应，逻辑连贯。
4. 空4前文指出三星堆有很多未解之谜，C选项说明其中一个谜团是没有发现任何文字记录，正好呼应后文人们好奇古蜀人是否使用不同书写方式的内容，匹配度很高。
5. 空5前文提到三星堆展现了古人的创造力，B选项的It指代三星堆遗址，进一步说明它也让我们了解到人类丰富的过往，和后文它的秘密持续吸引研究者关注的内容衔接顺畅。
多余选项A不符合任意一处的语境要求。