一、小明对火星感兴趣，他分享的未解之谜也与此有关。请从方框中选择适当的词，并根据需要用其正确形式填空。注意:每空一词,每词仅用一次,有两词为多余项。
方框内的词：
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 have been 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. arguments
8. With
9. unknown
10. to explore

1. 此处修饰名词unsolved mysteries，需用形容词，interest的形容词形式interesting表示“有趣的”，符合“最有趣的未解之谜之一”的语境。
2. 此处引导表语从句，表达“是否火星上存在生命”的含义，用连接词whether。
3. 句意：作为我们附近的行星，数百年来火星一直吸引着人们。planet意为“行星”，符合常识。
4. 句意：我们几乎从未停止探寻它的秘密。hardly是副词，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此处为名词“发现”，对应后文提到火星存在水的迹象的内容。
6. 句意：更不用说现在还有任何生物是存活的，alive是形容词，意为“活着的”，作表语符合语境。
7. 句意：科学家们关于这个谜团有无尽的争论。endless后接可数名词复数，argue的名词形式argument的复数arguments表示“争论”，符合语境。
8. 固定搭配With the development of...意为“随着……的发展”，是常用短语，单词首字母需大写。
9. 句意：但目前为止，这个行星上是否曾经存在过生命仍然是未知的。know的形容词形式unknown表示“未知的”，符合语境。
10. 固定搭配encourage sb. to do sth.意为“鼓励某人做某事”，此处用explore的不定式形式to explore，意为“探索”，符合句意。

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！阅读短文及文后A~E选项，选出最佳选项填入空白处。
Accidental 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 discovery at the Sanxingdui Ruins site is 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 Ruins. 4. Many people wonder if they used a different writing method. Or maybe they depended on telling stories from one to the other to pass down things.
The Sanxingdui Ruins 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. It also reminds us of the rich past of humans.
B. One of them is that no ancient writing has been found.
C. It shows ancient Chinese people's great skills.
D. These show that a great ancient city once stood here.
E. They were discovered by a farmer in 1929 by accident.

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

我们可以根据上下文逻辑匹配选项：
1. 第一空前提到偶然发现往往能开启奇迹之门，举例四川三星堆遗址，后文介绍三星堆的美誉，E选项“它们在1929年被一位农民偶然发现”刚好呼应开头的“偶然发现”主题，衔接自然。
2. 第二空前文罗列了三星堆出土的上万件各类古文物，后文点明这里是古蜀国的核心区域，D选项“这些（出土文物）表明这里曾经坐落着一座宏伟的古城”，用These指代前文的出土文物，承上启下。
3. 第三空前提到三星堆最惊人的发现是青铜器，还有仅0.2毫米厚的超薄黄金面具，后文提到相关技艺已经失传，C选项“它展现了古代中国人民高超的技艺”衔接精巧的文物和后文的技艺失传的内容。
4. 第四空前提到三星堆有很多未解之谜，后文围绕古人的文字记录方式展开猜测，B选项“其中一个谜团是没有发现任何古代文字”，用One of them对应前文的many mysteries，引出后文关于书写方式的讨论。
5. 第五空前提到三星堆展现了古人的创造力，后文说明它的秘密一直吸引研究者关注，A选项“它也让我们想起人类丰富的过往”，和前句的“展现古人创造力”形成递进逻辑，衔接通顺。