三、用方框中所给短语的适当形式填空
no longer put effort into unlock the secrets of open one's mouth change one's belief
1. Scientists around the world are working together to how life first appeared on the earth.
2. She doubts whether hard work pays off because her own experience has proved it true.
3. The shy girl finally to answer the teacher's question about what courage meant.
4. The touching story of the volunteer in what I could do to make the world better.
5. If we what we truly value, we will gradually understand why persistence is important.

1. unlock the secrets of
2. no longer
3. opened her mouth
4. changed my belief
5. put effort into

【分析】
首先明确方框内各短语的含义：no longer（不再）、put effort into（投入，致力于）、unlock the secrets of（揭开…的秘密）、open one's mouth（开口）、change one's belief（改变信念）。解题时需结合每个句子的语境，判断所需短语，再根据时态、语法规则调整短语的适当形式，确保符合句子语义和结构要求。
【解析】
1. 句意：世界各地的科学家正共同努力________生命最初如何出现在地球上。根据语境，科学家的目标是揭开生命起源的秘密，unlock the secrets of符合；work together to后接动词原形，故填unlock the secrets of。
2. 句意：她________怀疑努力是否有回报，因为她自己的经历证明了这是真的。根据后半句“经历证明努力有用”，可知她不再怀疑，no longer是副词短语，直接作状语，符合语境，故填no longer。
3. 句意：这个害羞的女孩最终________回答老师关于勇气含义的问题。根据“害羞的女孩”和“回答问题”，可知是开口，open one's mouth；动作发生在过去，用一般过去时，主语是the shy girl，故填opened her mouth。
4. 句意：志愿者的感人故事________我能为让世界变得更好做些什么。根据语境，故事改变了我的信念，change one's belief；动作发生在过去，用一般过去时，对应“我”的信念，故填changed my belief。
5. 句意：如果我们________我们真正重视的，我们会逐渐理解坚持为什么重要。根据语境，是投入到重视的事物中，put effort into；if引导的条件状语从句遵循“主将从现”，从句用一般现在时，主语是we，故填put effort into。
【答案】
1. unlock the secrets of
2. no longer
3. opened her mouth
4. changed my belief
5. put effort into
【知识点】
动词短语的适当形式、一般过去时
【点评】
本题考查常用动词短语的词义辨析及语境运用，需结合句子语义和时态规则调整短语形式，属于初中英语基础题型，侧重对短语搭配和时态的掌握。
【难度系数】
0.6

四、根据汉语提示完成句子
1. Theses beautiful golden stones (静静地留存着往昔的片段).
2. (科学家们过去经常认为蚂蚁来自) the northern half of the earth.
3. (作为窥探往昔的一扇窗,琥珀一直被深入研究).

1. quietly keep pieces of the past
2. Scientists used to believe that ants
came from
3. As a window on the past, amber
has been much studied

【分析】本题为根据汉语提示完成英语句子的题型，需结合句子语境、英语固定搭配及语法规则，将汉语提示准确转化为符合英语表达习惯的内容，注意时态、语态、短语搭配等细节。
【解析】1. 第一题：主语为复数名词，描述客观事实用一般现在时；“静静地”用副词quietly修饰动词，“留存”对应keep，“往昔的片段”为固定表达pieces of the past，故填quietly keep pieces of the past。
2. 第二题：“过去经常做某事”用固定结构used to do sth，“科学家们”译为Scientists，“认为”后接that引导的宾语从句；从句中“来自”用come from，描述过去的看法，从句用一般过去时，故填Scientists used to believe that ants came from。
3. 第三题：“作为”用介词As，“窥探往昔的一扇窗”译为a window on the past；主语为amber，“一直被研究”用现在完成时的被动语态has been studied，“深入”对应much，故填As a window on the past, amber has been much studied。
【答案】1. quietly keep pieces of the past
2. Scientists used to believe that ants came from
3. As a window on the past, amber has been much studied
【知识点】固定搭配、used to用法、现在完成时被动语态
【点评】本题考查基础英语表达与语法的综合运用，侧重常用短语、固定句式及时态语态的掌握，难度适中，适合中等水平学生练习。
【难度系数】0.5

五、完形填空
阅读下面短文,掌握其大意,然后从各题所给的 A、B、C、D 四个选项中,选出最佳答案。
A special piece of amber
A Chinese scientist found a piece of amber in northern Myanmar(缅甸). He thought that the amber was nearly 100 million years old. What an amazing and special finding! The Chinese scientist talked about the finding at the Shanghai Natural History Museum. He wanted more people to know about the amber.
The finding is special because of the thing kept the amber. It is a piece of a birdlike dinosaur's tail. It is the first time that people have found dinosaur material in amber. Some scientists were excited and surprised to see the amber. They had a discussion about the amber and found out some interesting .
According to the scientists' discussion, the dinosaur was a birdlike animal, and it was as as a chicken. The birdlike dinosaur was about 18.5 centimetres long. The dinosaur's tail was about 6 centimetres long when it was out.
Besides the dinosaur's tail, there are some other things in the amber. There are two ants, pieces a plant and some small bubbles.
The amber gives scientists a look at this small dinosaur. Before this finding, scientists only had fossils to study, but fossils often don't keep soft parts like skin or feathers. The amber, , keeps the dinosaur's tail very well, including its feathers.
Scientists said the feathers on the tail were to those of modern birds, but they were not the same. The dinosaur's feathers were longer and had a different colour. This scientists learn more about how some dinosaurs evolved(进化) into birds over time.
This amazing amber is now a part of the museum's collection. It helps people around the world learn more about the ancient world and the animals that lived long ago.
1. A. on B. in C. above D. under
2. A. facts B. stories C. ideas D. plans
3. A. tall B. heavy C. big D. fast
4. A. kept B. spread C. put D. cut
5. A. of B. for C. with D. about
6. A. new B. clear C. hard D. far
7. A. also B. however C. still D. then
8. A. similar B. different C. close D. important
9. A. asked B. told C. helped D. wanted
10. A. boring B. useless C. common D. valuable

1.B 2.A 3.C 4.B 5.A 6.B 7.B 8.A 9.C 10.D

【分析】
本篇是关于含恐龙尾巴的琥珀的完形填空，需结合上下文语境、词汇辨析及固定搭配逐一解题：
1. 第1空：需表达“在琥珀内部”，用介词in；
2. 第2空：科学家讨论后发现的是有趣的事实，对应名词facts；
3. 第3空：描述恐龙体型和鸡一样大，用as big as；
4. 第4空：表示尾巴展开后的长度，用短语spread out；
5. 第5空：固定搭配pieces of，意为“几片/块”；
6. 第6空：琥珀能让科学家清晰观察恐龙，用clear修饰look；
7. 第7空：前后句是转折关系，用however；
8. 第8空：固定搭配similar to，意为“与…相似”；
9. 第9空：固定搭配help sb do sth，意为“帮助某人做某事”；
10. 第10空：这枚琥珀是博物馆珍贵的藏品，用valuable。
【解析】
1. 考查介词：表示“在琥珀内部”，选B（in）；
2. 考查名词辨析：讨论后发现有趣的事实，选A（facts）；
3. 考查形容词辨析：描述体型大小，as big as符合语境，选C（big）；
4. 考查动词短语：spread out表示“展开”，选B（spread）；
5. 考查固定搭配：pieces of是固定用法，选A（of）；
6. 考查形容词辨析：clear look意为“清晰的观察”，选B（clear）；
7. 考查连词：前后句转折，选B（however）；
8. 考查固定搭配：similar to是固定搭配，选A（similar）；
9. 考查动词辨析：help sb do sth符合语境，选C（helped）；
10. 考查形容词辨析：valuable意为“珍贵的”，符合藏品属性，选D（valuable）。
【答案】
1.B 2.A 3.C 4.B 5.A 6.B 7.B 8.A 9.C 10.D
【知识点】
完形填空词汇辨析、介词用法、固定搭配
【点评】
本文是科普类完形填空，围绕特殊琥珀展开，考查学生对词汇、固定搭配及上下文逻辑的理解，难度适中，贴近学生认知，有助于提升语篇分析能力。
【难度系数】
0.6