原田英語の時事英語ジュニア｜英語ニュース ワークシート（中学生レベル）
Class ____ No. ____ Name ____________________
履歴書にAIだけが読める「見えない文字」！100通に1通でかくしメッセージ
Secret Words in Job Applications
1Some job seekers hide secret messages in their resumes. Researchers in the United States found them in about 1 percent of the resumes they checked. The messages are written for AI, not for people.
2Many companies now use AI tools to read resumes. The AI helps decide which people to look at more closely.
3Some people write the secret words in white on a white page. Others use very tiny letters. Humans cannot see the words, but the AI can read them.
4Most of the hidden messages were long lists of skills. A few told the AI to say the person was perfect for the job. The researchers studied nearly 200,000 resumes. They said the number of these resumes has grown in the last two years.
Words 単語
| job seekersA1 | 名 | 仕事をさがす人people who are looking for work |
| resumesB2 | 名 | 履歴書（resume の複数形）papers that show your school and work history |
| researchersB1 | 名 | 研究者（researcher の複数形）people who study something to learn new facts |
| toolsA1 | 名 | 道具（tool の複数形）things that help you do a job |
| decideA2 | 動 | 決めるto make a choice after thinking |
| tinyB1 | 形 | とても小さいvery, very small |
| hiddenB1 | 形 | かくされたput where others cannot see or find it |
| skillsA1 | 名 | 技能、スキル（skill の複数形）things you can do well after practice |
単語のレベル：CEFR-J（『CEFR-J Wordlist Version 1.6』 東京外国語大学投野由紀夫研究室. （URL: https://www.cefr-j.org/download.html より 2026年8月ダウンロード））
1. Reading Quiz 本文の内容に合うものを選ぼう
Who are the secret messages written for?
A. For teachersB. For AIC. For parentsD. For friends
About what share of the resumes had secret messages?
A. About 1 percentB. About 10 percentC. About 50 percentD. All of them
How do some people hide the words?
A. They write them in red.B. They put them on the back of the envelope.C. They write them in white on a white page.D. They say them out loud.
What were most of the hidden messages?
A. JokesB. PicturesC. Phone numbersD. Long lists of skills
2. True or False 正しければ T、違っていれば F
( ) Many companies use AI tools to read resumes.
( ) Humans can easily see the hidden words.
( ) The researchers studied nearly 200,000 resumes.
( ) The number of these resumes has gone down.
3. Fill in the Blanks 下の語から選んで空らんをうめよう（形を変えずに）
toolsresumeshiddentinydecideResearchers
Some job seekers hide secret messages in their _____.
Others use very _____ letters.
_____ in the United States found them in about 1 percent of the resumes they checked.
Many companies now use AI _____ to read resumes.
The AI helps _____ which people to look at more closely.
Most of the _____ messages were long lists of skills.
4. Word Order 語を並べかえて正しい文にしよう
( people / AI, / messages / The / written / for / are / not / for ) .
( letters / Others / tiny / use / very ) .
( long / hidden / messages / Most / lists / were / skills / the / of / of ) .
5. Think and Write 英語で答えてみよう
Is it fair to hide messages for AI in a resume? Why or why not?（履歴書にAI向けのかくしメッセージを入れるのはフェアだと思いますか？理由も考えよう。）
Should a person or an AI read job applications? Why?（仕事の応募書類は、人とAIのどちらが読むべきだと思いますか？それはなぜ？）
Answers 解答
1. (1) B (2) A (3) C (4) D
2. (1) T (2) F (3) T (4) F
3. (1) resumes (2) tiny (3) Researchers (4) tools (5) decide (6) hidden
4.
- The messages are written for AI, not for people.
- Others use very tiny letters.
- Most of the hidden messages were long lists of skills.
全文訳
1仕事をさがす人の中には、履歴書にかくしメッセージを入れる人がいます。アメリカの研究者が調べた履歴書のうち、約1％にそれが見つかりました。メッセージは人ではなく、AIに向けて書かれています。
2今では多くの会社が、履歴書を読むのにAIの道具を使っています。AIは、どの人をもっとくわしく見るかを決める手助けをします。
3白い紙に白い文字でかくし言葉を書く人もいます。とても小さな文字を使う人もいます。人間にはその言葉が見えませんが、AIは読むことができます。
4かくしメッセージのほとんどは、スキルを長く並べたものでした。AIに「この人はこの仕事にぴったりだ」と言わせようとするものも少しありました。研究者は、20万通近くの履歴書を調べました。研究者によると、こうした履歴書はここ2年でふえています。
文法ポイント：受け身（be動詞 + 過去分詞）
「～される」を表す。本文の The messages are written for AI, not for people. は「メッセージは人ではなくAIに向けて書かれている」という意味。
出典：ITmedia NEWS、USENIX Security Symposium 2026（論文） ほか（記事は原田英語の時事英語ジュニアのオリジナル）｜https://www.haradaeigo.com/jijieigo-junior/news/2026-10-09-hidden-ai-text-resumes/