五、阅读短文，用括号内所给词的正确形式填空，将短文内容补充完整。
My classmates and I took part in a virtual (虚拟的) tour of the Mariana Trench last term. It was 1. (unforgettable) experience we had ever had in the science museum.
We put on our VR headsets and felt like we were really going to explore 2. (deep) part of the ocean. As we got 3. (close) to the trench bit by bit, the noise of the deep-sea grew 4. (loud) and 5. (scary) than before. Suddenly, right on our screens, the trench appeared. It went on for as 6. (far) as the eye could “see”. It felt like we were in 7. (quiet) and the most interesting place on earth. We saw some of 8. (strange) deep-sea fish in the world, and they looked very real! The 3-D effects were very realistic, and it was as if we were really there!
We all thought the virtual tour was 9. (exciting) part of the whole term. We learned a lot, and our teacher said it was 10. (good) virtual trip our school had ever organized.

五、1. the most unforgettable 2. the deepest 3. closer 4. louder 5. scarier 6. far 7. the quietest 8. the strangest 9. the most exciting 10. the best

【解析】
1. 根据后文“we had ever had”可知是在科学博物馆中经历过的最难忘的体验，unforgettable是多音节形容词，最高级形式为the most unforgettable，故填the most unforgettable。
2. 此处指海洋最深的部分，应用deep的最高级形式the deepest，故填the deepest。
3. 根据“bit by bit”可知是逐渐靠近，存在与之前的对比，应用close的比较级closer，故填closer。
4. 由后文“than before”可知要用比较级，loud的比较级是louder，故填louder。
5. 结合“than before”，scary的比较级是scarier，故填scarier。
6. “as + 形容词/副词原级 + as”是固定结构，此处用far的原级，故填far。
7. 由后文“and the most interesting”可知是并列的最高级形式，quiet的最高级是the quietest，故填the quietest。
8. 根据“in the world”的范围，要用strange的最高级the strangest，故填the strangest。
9. 结合“of the whole term”的范围，exciting是多音节形容词，最高级为the most exciting，故填the most exciting。
10. 由“our school had ever organized”可知是学校组织过的最好的虚拟旅行，good的最高级是the best，故填the best。
【答案】
1. the most unforgettable
2. the deepest
3. closer
4. louder
5. scarier
6. far
7. the quietest
8. the strangest
9. the most exciting
10. the best
【知识点】
形容词/副词比较级、形容词/副词最高级、as...as原级用法
【点评】
本题重点考查形容词和副词的比较级与最高级的运用，需结合语境中的比较范围（如ever had、than before、in the world等）判断形式，同时要掌握多音节词、不规则变化词的比较级和最高级变形，对学生的语境分析能力和语法基础有一定考查。
【难度系数】
0.6

六、根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使文章意思通顺、内容完整。
There are a lot of amazing natural wonders in China. Qinghai Lake is one of them. How much do you know about it? 1.
Qinghai Lake is the largest saltwater lake in China. It looks like a huge blue mirror lying on the Qinghai - Xizang Plateau. 2. It is surrounded by beautiful mountains and huge grasslands. When summer comes, the grasslands around the lake turn green, and many kinds of flowers bloom. Groups of sheep and cows are like white clouds on the green grass.
Qinghai Lake is also home to different kinds of birds. 3. Every year, a large number of birds fly to stay here. The birds make the lake more lively. Some birds fly over the lake, while others rest on the rocks in the lake.
4. They depend on the resources of the lake for their living. They also try their best to protect the lake and its ecosystem. The lake is not only a natural treasure but also an important part of the local people's life.
Scientists are exploring the secrets of Qinghai Lake. 5. This can help to protect it better.
A. It's a perfect place for watching birds.
B. They want to know more about the lake.
C. Here are some important facts about the lake.
D. The local people's life is closely connected with the lake.
E. The colour of the lake changes with different seasons and weather.

1—5 CEADB

【解析】
1. 第1空：前文提问读者对青海湖的了解程度，后文开始介绍青海湖的相关情况，C选项“Here are some important facts about the lake.”能自然引出下文的介绍，故选C。
2. 第2空：前文描述青海湖的外观，后文介绍其周边环境，E选项“The colour of the lake changes with different seasons and weather.”是对湖水本身特征的补充描述，衔接上下文，故选E。
3. 第3空：前文提到青海湖是多种鸟类的栖息地，后文讲述大量鸟类飞来此处，A选项“It's a perfect place for watching birds.”承接上文鸟类相关内容，引出下文，故选A。
4. 第4空：后文提到人们依靠湖的资源生存并保护湖泊，D选项“The local people's life is closely connected with the lake.”引出当地人与湖的紧密联系，衔接下文，故选D。
5. 第5空：前文说明科学家在探索青海湖的秘密，后文提及这有助于更好地保护湖泊，B选项“They want to know more about the lake.”解释科学家探索的目的，衔接合理，故选B。
综上，答案为1—5 CEADB。
【答案】
1—5 CEADB
【知识点】
语篇逻辑衔接、语境信息匹配、补全短文技巧
【点评】
本题考查学生对语篇逻辑关系的把握能力，要求学生结合上下文语境，分析句子间的衔接与连贯，选出合适的选项，既考查对文章内容的理解，也锻炼逻辑思维能力。
【难度系数】
0.6