Ⅲ. Complete the passage with the proper form of the words in the box.
invent, unexpected, ticket, completely, on purpose
Tom is a 13-year-old boy. He has a passion for science. Last month, he tried 1. a small robot. He worked hard on it every day. 2. , something strange happened yesterday. When he was cleaning his room, the robot moved under his bed and found a train 3. ! Tom was very surprised. He thought, “Did the robot do this 4. , or was it just by chance?” He checked carefully and found that the robot 5. didn’t understand what he told it to do. But Tom still smiled. He thought he could tell this funny thing to his grandma.

1. to invent
2. Unexpectedly
3. ticket
4. on purpose
5. completely

【分析】
本题要求用方框内单词的适当形式完成短文，需结合语境、词性、固定搭配及变形规则解题。步骤如下：1. 通读短文，把握整体语境；2. 分析每个空缺处的句子成分，判断所需词性；3. 结合所给单词的词义，进行适当变形（如动词不定式、副词转换等），填入符合语境的正确形式。
【解析】
1. 固定搭配try to do sth表示“尽力做某事”，此处需用动词不定式，故填to invent；
2. 空缺处修饰整个句子，需用副词，unexpected的副词形式为Unexpectedly，符合语境；
3. train ticket是固定名词短语，意为“火车票”，直接用名词ticket即可；
4. 固定短语on purpose意为“故意”，对应语境中询问机器人是故意所为还是偶然发生；
5. 空缺处修饰动词understand，需用副词，completely为副词，意为“完全地”，符合语境。
【答案】
1. to invent
2. Unexpectedly
3. ticket
4. on purpose
5. completely
【知识点】
动词不定式、副词用法、固定搭配
【点评】
本题考查词汇在语境中的灵活运用，涉及固定搭配、词性转换，是初中英语常见题型，侧重考查学生的语境分析能力和词汇变形能力。
【难度系数】
0.6

Ⅳ. Complete the passage with proper words according to the context and the first letters given.
For centuries, humans dreamed of flying like birds. Two brothers, Orville and Wilbur Wright, were deeply 1. c about this idea. They spent years studying birds' wings and reading books about flight.
In 1899, they built their first glider(滑翔机), but it failed to fly. They 2. r they needed to understand aerodynamics(空气动力学) better. They tested over 200 wing designs in a small wind tunnel they invented.
3. these experiments, they learned how air flowing around wings could create lift.
In 1903, they built the "Flyer", a 4. p with a lightweight engine. On December 17th, Orville lay on the wing and started the engine. The Flyer shook, then 5. r into the air! It flew for 12 seconds—the first powered flight in history.
Their success came from endless curiosity. Wilbur once said, "If birds can
glide for long periods, why can't we?" They never stopped asking questions and 6. t new solutions.
Today, their invention have 7. c the world. It reminds us that curiosity and perseverance(毅力) can turn 8. d into reality.

1. curious
2. realised
3. Through
4. plane
5. rose
6. testing/trying
7. changed
8. dreams

【分析】
本题是根据上下文及首字母提示完成短文的词汇填空题，解题思路为：先通读全文把握文章主旨（莱特兄弟发明飞机的历程），再针对每个空格，结合语境逻辑、固定搭配、语法规则（如时态、词性）及首字母提示，确定符合要求的单词，同时注意单词的形式变化（如过去式、动名词等）。
【解析】
1. 固定搭配be curious about意为“对……好奇”，结合语境莱特兄弟对飞行的想法充满好奇，首字母为c，故填curious；
2. 结合上文滑翔机失败，可知他们“意识到”需要更好理解空气动力学，文章为过去时态，首字母为r，故填realised；
3. 介词Through表示“通过”，结合语境“通过这些实验，他们学到了……”，首字母为T，故填Through；
4. 前文提到“Flyer”是带轻引擎的飞行器，结合首字母p，可知填plane（飞机）；
5. 短语rise into the air意为“升空”，文章为过去时态，首字母为r，故填rose；
6. 并列结构stop doing sth.，结合语境“从不停止提问和尝试新方法”，首字母为t，故填testing或trying；
7. 句子为现在完成时，结合语境“他们的发明改变了世界”，首字母为c，故填changed；
8. 固定搭配turn dreams into reality意为“把梦想变成现实”，结合语境，首字母为d，故填dreams。
【答案】
1. curious 2. realised 3. Through 4. plane 5. rose 6. testing/trying 7. changed 8. dreams
【知识点】
英语词汇运用、固定搭配、时态辨析
【点评】
本题考查学生对英语词汇的掌握、语境理解能力及基础语法（时态、固定搭配）的运用，是常见的首字母填空题型，难度适中，需结合文章主旨和细节分析作答。
【难度系数】
0.6