三、用方框中所给单词或词组的适当形式填空。每词（组）限用一次。
by actual confuse succeed though
inspire code entertainment too much
Many people believe inventors are always experienced adults. 21. , some amazing inventions come from teenagers. Louis Braille, who lost his sight at three, once felt 22. by the old raised letters—similar shapes like “Q” and “O” made reading hard, and the letters took 23. space. To solve this, he decided to replace them with a simpler system of 24. made of raised dots. At 15, he improved the system, and his Braille code is still used 25. blind people worldwide, letting them read easily.
Another teen inventor, Philo Farnsworth, was 26. by the furrows（犁沟）in the farm fields to create electronic television. 27. many doubted his idea and he faced money trouble, he never gave up. At 21, he finally 28. . His work laid the ground for modern TVs that we use for 29. today.
The stories tell us: Age never limits creativity. With courage and passion, anyone can turn small ideas into life-changing inventions.

21. Actually
22. confused
23. too much
24. codes
25. by
26. inspired
27. Though
28. succeeded
29. entertainment

【分析】本题为英语选词填空，需结合方框内单词/词组的词义、词性，以及上下文语境、语法规则（如词性转换、时态、固定搭配等）确定每个空的正确形式。解题步骤：1. 先明确方框内各词/词组的含义与形式：by（介词，被/通过）、actual（形容词，实际的）、confuse（动词，使困惑）、succeed（动词，成功）、though（连词，虽然）、inspire（动词，激励）、code（名词，代码/密码）、entertainment（名词，娱乐）、too much（词组，太多，修饰不可数名词）；2. 逐空分析：结合句子结构（如句首状语、系动词后、被动语态、时态等）和语境逻辑，选择对应词汇并调整形式。
【解析】
21. 空格位于句首作状语修饰整个句子，需用actual的副词形式Actually，表“实际上”，契合前文观点与后文事实的转折逻辑；
22. feel为系动词，后接形容词作表语，主语指人，需用confuse的过去分词confused（形容词化，表“感到困惑的”）；
23. 空格修饰不可数名词space，需用词组too much，表“太多”；
24. 此处指盲文系统的“代码”，code为可数名词，表泛指需用复数形式codes；
25. 此处为被动语态，结构为be used by sb.（被某人使用），填介词by；
26. 固定搭配be inspired by（被……激励），此处为被动语态，用inspire的过去分词inspired；
27. 空格引导让步状语从句，表“虽然”，用连词Though；
28. 句子时态为一般过去时，谓语动词需用succeed的过去式succeeded；
29. for为介词，后接名词，entertainment为不可数名词，表“娱乐”，符合语境。
【答案】21. Actually；22. confused；23. too much；24. codes；25. by；26. inspired；27. Though；28. succeeded；29. entertainment
【知识点】英语词汇适当形式填空；副词与形容词用法；固定搭配与连词
【点评】本题考查英语基础词汇的运用能力，需结合语境、语法规则及词汇形式变化解题，是初中英语常见题型，注重对核心词汇的掌握和语境理解。
【难度系数】0.5