A 语法填空。
Easton LaChappelle was only 14 years old when he made a robotic arm from plastic 1. (block) and fishing line. There, he met Jenny, a girl 2. (bear) without an arm. Her old, hook-like artificial arm cost an amazing 80,000. And what's 3. ______ (bad), she often needed a new one as she grew. Easton was 4. ______ (shock)—his arm cost just 300.
After the fair, Easton worked hard to improve his 5. _________ (invent). 6. _________ he was 16, he used a 3-D printer to build a better artificial arm that could move with brain signals. But the arm was too heavy, 7. _________ (weigh) 3.6 kilograms.
Easton didn't give up. He kept testing and solving problems. 8. _________ age 23, he succeeded. His new arm weighed only 0.5 kilograms and cost about 500.
Best of all, Easton didn't want 9. _________ (make) money. Instead, he shared his design online for free. Easton's invention has truly given 10. _________ helping hand to many children in need.

1. blocks 2. born 3. worse 4. shocked
5. invention 6. When 7. weighing 8. At
9. to make 10. a

【分析】
本题为语法填空题，需结合语境、词性变化、固定搭配、语法规则（如非谓语、连词、介词等）逐一分析每个空：1. 塑料块为可数名词，需用复数形式；2. 表示“天生的”用固定搭配born；3. 固定短语需用bad的比较级；4. be动词后接修饰人的形容词；5. 形容词性物主代词后需接名词；6. 引导时间状语从句用对应连词；7. 非谓语动词需判断主动关系用现在分词；8. 固定介词搭配；9. 固定动词搭配需用不定式；10. 固定短语用对应冠词。
【解析】
1. 考查名词复数。block是可数名词，此处表泛指“塑料块”，用复数形式blocks。
2. 考查固定搭配。be born without...是固定表达，意为“天生没有...”，此处作后置定语，用形容词born。
3. 考查固定短语。what's worse是固定短语，意为“更糟的是”，需用bad的比较级worse。
4. 考查形容词。be动词后接形容词作表语，主语是人，用-ed形式的形容词shocked（震惊的）。
5. 考查名词。his是形容词性物主代词，后需接名词，invent的名词形式为invention（发明）。
6. 考查连词。此处引导时间状语从句，意为“当...时”，用连词When。
7. 考查非谓语动词。arm与weigh（重达）是主动关系，用现在分词weighing作伴随状语。
8. 考查介词。at age + 数词是固定搭配，意为“在...岁时”，用介词At。
9. 考查固定搭配。want to do sth是固定用法，意为“想要做某事”，故填to make。
10. 考查冠词。give a helping hand是固定短语，意为“伸出援手”，helping以辅音音素开头，用不定冠词a。
【答案】
1. blocks 2. born 3. worse 4. shocked 5. invention 6. When 7. weighing 8. At 9. to make 10. a
【知识点】
名词的数、非谓语动词、固定搭配
【点评】
本题考查基础语法知识，涵盖名词、形容词、非谓语、连词、冠词及固定短语等，需学生结合语境运用语法规则，是常见的语法填空题型，侧重基础语法的实际运用。
【难度系数】
0.5

B 选词填空。
walk in one's way sense use congratulate
A 17-year-old boy, Shantanu Gangwar, found blind students at his school had trouble 1. . They needed a smart machine to tell them about things 2. . So he decided to make one to help.
He invented a smart walking stick. It can 3. nearby things and shake to remind the user. Shantanu won an award and received many 4. for his great invention.
But he wanted to make it better. He also hoped 5. it in real life after high school.

1. walking 2. in their way 3. sense
4. congratulation 5. to use

【分析】
本题为选词填空，需结合语境、固定搭配及单词的适当形式变化解题。首先明确给定词汇：walk、in one's way、sense、use、congratulate。第1空考查固定搭配have trouble (in) doing sth，需将动词变为动名词；第2空考查短语in one's way，结合主语属性调整代词；第3空情态动词后接动词原形，结合语境选对应动词；第4空many后接名词，需转换词性；第5空考查固定搭配hope to do sth，需用动词不定式。
【解析】
1. 固定搭配have trouble (in) doing sth表示“做某事有困难”，此处指盲学生走路有困难，故将walk变为动名词形式walking。
2. 短语in one's way意为“在路上”，结合语境指告知盲学生路上的事物，one's对应复数主语的their，故填in their way。
3. 情态动词can后接动词原形，结合“智能手杖感知附近事物”的语境，填动词原形sense。
4. many后接名词，congratulate的名词形式为congratulation，符合“获得许多祝贺”的语境，故填congratulation。
5. 固定搭配hope to do sth表示“希望做某事”，此处指希望高中后在现实中使用它，故填use的不定式形式to use。
【答案】
1. walking 2. in their way 3. sense 4. congratulation 5. to use
【知识点】
固定搭配、短语运用、动词形式变化
【点评】
本题考查选词填空，侧重常用固定搭配、短语及单词适当形式的运用，难度适中，学生熟悉相关搭配和语境即可正确作答。
【难度系数】
0.5

C 选词填空。
electric invent fly explore careful
key discover talent amaze test
Albert Einstein once said, “I have no special 1. . I am only passionately curious.” Many great discoveries in history come from curiosity. It pushes people to explore the unknown and create 2. inventions.
Zhang Heng, a great Chinese scientist, was curious about nature. He studied the sky and the earth 3. , creating China’s first star map and the earliest earthquake detector. Benjamin Franklin was curious about 4. . Through his research and experiments, he 5. the lightning rod to protect buildings. Wan Hu, an ancient Chinese explorer, dreamed of 6. into space. He lost his life when he 7. his invention, but his courage inspired later space 8. .
Curiosity works like a 9. . It opens new doors for us to study and 10. .

1. talents 2. amazing 3. carefully
4. electricity 5. invented 6. flying 7. tested
8. explorers 9. key 10. discover

【分析】做选词填空时，需先分析每个空格的句子成分确定所需词性，再结合给定词汇的词义及形式变化，匹配上下文语境选择合适的词。具体步骤：1. 看空格前后的修饰词或中心词，判断所需词性；2. 结合语境确定词义；3. 根据句子时态、固定搭配等调整词汇形式（如名词复数、动词过去式、动名词等）。
【解析】1. 空格前为形容词special，需填名词，结合语境“特殊才能”，用talent的复数形式talents；2. 空格修饰名词inventions，需形容词，amaze的形容词amazing（令人惊叹的）；3. 空格修饰动词studied，需副词，careful的副词carefully；4. be curious about后接名词，electric的名词形式electricity（电）；5. 句子为一般过去时，需动词过去式，invent的过去式invented（发明）；6. dream of后接动名词，fly的动名词flying；7. 时态为一般过去时，需动词过去式，test的过去式tested（测试）；8. 结合语境“太空探索者”，用explore的名词复数explorers；9. a后接名词，key（关键）；10. 与study并列，需动词原形，discover（发现）。
【答案】1. talents 2. amazing 3. carefully 4. electricity 5. invented 6. flying 7. tested 8. explorers 9. key 10. discover
【知识点】英语词汇运用、词性转换、语境填词
【点评】本题考查学生对给定词汇的词性变化、词义辨析及上下文语境的运用能力，需结合句子成分确定词性，再匹配合适词汇并调整形式，难度适中。
【难度系数】0.6