語彙 — 基礎（~1000語）
Q1. (3点)
次の英単語の意味として正しいものを選びなさい。
Q2. (3点)
次の日本語の意味に合う英単語を書きなさい。
(1) 「きょうは とても あつい」 — It is very ( ) today.
(2) 「かのじょは とても はやく はしれる」 — She can ( ) very fast.
(3) 「この かばんは おもすぎる」 — This bag is too ( ).
語彙 — 中級（~3000語）
Q3. (4点)
次の英単語の意味として最もふさわしいものを選びなさい。
語彙 — 上級（~5000語）①
Q4. (4点)
次の英単語について、正しい意味をすべて選びなさい。正しいものは1つとは限りません。
(1) significant
語彙 — 上級（~5000語）②
Q5. (6点)
次の英文の（ ）に入る最も適切な英単語を1語ずつ書きなさい。
(1) The police found ( ) that the suspect was at home at the time of the crime.
※「証拠」を意味する名詞
(2) From a historical ( ), this event changed the world forever.
※「視点・観点」を意味する名詞
(3) The scientist proposed a new ( ) to explain why birds migrate south in winter.
※「仮説」を意味する名詞
語彙 — 上級（~5000語）③
Q6. (4点)
次の4つの英文のうち、"consequence" という語が正しく使われている文をすべて選びなさい。
語彙 — 上級（~5000語）④
Q7. (4点)
左の英単語と最も意味が近いもの（類義語）を右から選び、正しい組み合わせを答えなさい。
| | 単語 | | 類義語 |
|---|------|----|--------|
| 1 | sufficient | | ア. entire |
| 2 | establish | | イ. enough |
| 3 | whole | | ウ. found |
| 4 | reject | | エ. refuse |
語彙 — 高度（~8000語）
Q8. (4点)
次の英単語を語源のパーツに分解して、意味を推測しなさい。
unprecedented
ヒント:
- un- = 「～ない」（否定）
- pre- = 「前もって」
- ced(e) = 「行く・進む」（ラテン語 cedere）
- -ent = 形容詞語尾
- -ed = 過去分詞
この語の意味として最も適切なものはどれですか。
発音
Q9. (3点)
次の4つの単語のうち、下線部の発音が他の3つと異なるものを1つ選びなさい。
ea の発音に注目してください。
seat / meat / bread / heat
Q10. (3点)
次の4つの単語のうち、最も強く発音する部分（アクセント）の位置が他の3つと異なるものを1つ選びなさい。
vol-un-TEER / en-gi-NEER / un-der-STAND / IM-por-tant
イディオム — 3000語レベル
Q11. (3点)
次のイディオム（慣用表現）の意味として正しいものを選びなさい。
イディオム — 5000語レベル①
Q12. (4点)
次の対話文の（ ）に入る最も適切なイディオムを下の選択肢から選んで書きなさい。
【選択肢】 break the ice / keep an eye on / lend a hand / take it for granted
(1) A: I'm going to the restroom. Could you ( ) my bag?
B: Sure, no problem.
(2) A: Nobody was talking at the party, so I told a joke to ( ).
B: That was a good idea!
前置詞 — 5000語レベル②
Q13. (4点)
次の英文の（ ）に入る最も適切な前置詞を書きなさい。
(1) She is very good ( ) playing the piano.
(2) The movie is based ( ) a true story.
(3) We need to deal ( ) this problem immediately.
(4) I'm looking forward ( ) seeing you again.
イディオム — 8000語レベル
Q14. (4点)
次の英文を読み、下線部の慣用表現の意味として最も適切なものを選びなさい。
The new policy was supposed to help small businesses, but it turned out to be a double-edged sword: while it reduced taxes, it also removed important protections.
文法 — 時制
Q15. (3点)
（ ）内の動詞を正しい形に変えて書きなさい。
(1) She ( go ) to school every day.
(2) I ( buy ) a new book yesterday.
(3) They are ( swim ) in the pool now.
文法 — 比較・不定詞
Q16. (4点)
次の英文の（ ）に入る最も適切なものを選びなさい。
(1) Mt. Fuji is ( ) mountain in Japan.
英語×算数
Q17. (5点)
次の英文を読んで、問いに答えなさい。
Sarah went to the store. She bought 4 apples for 120 yen each and 5 oranges for 80 yen each. She paid with a 1,000-yen bill.
問い: How much change did Sarah receive? 答えを数字で書きなさい。
式：
答え：
英語×理科
Q18. (4点)
次の英文を読んで、問いに答えなさい。
Forests are sometimes called "the lungs of the Earth." Just as our lungs take in air and release carbon dioxide, forests absorb carbon dioxide (CO₂) from the atmosphere and release oxygen (O₂) through a process called photosynthesis. This process is essential for maintaining the balance of gases in our atmosphere.
問い: Why are forests called "the lungs of the Earth"?
英語×日本史
Q19. (4点)
次の英文を読んで、問いに答えなさい。
In 1603, a powerful military leader established a new government in Edo, which is now known as Tokyo. This government, called the Tokugawa Shogunate, brought about 260 years of relative peace to Japan. During this period, the country adopted a policy of national isolation called "sakoku," which greatly limited trade and contact with foreign countries.
問い: Who established the government described in this passage?
中文読解
Q20. (5点)
次の英文を読んで、問いに答えなさい。
Scientists have long known that sleep plays an important role in learning and memory. Recent studies show that getting enough sleep is just as important as studying itself.
During sleep, our brain goes through several stages. In the deepest stage, called "slow-wave sleep," the brain replays information we learned during the day. This process helps move information from short-term memory to long-term memory. Without enough sleep, this process cannot work properly.
A study at Harvard University found that students who slept at least seven hours before an exam scored significantly higher than those who stayed up all night studying. The researchers concluded that sleep deprivation can reduce memory performance by up to 40 percent.
However, not all sleep is equal. The quality of sleep matters just as much as the quantity. Experts recommend maintaining a consistent sleep schedule and avoiding electronic devices before bedtime.
問1: 本文の内容と合っているものをすべて選びなさい。
Q21. (4点)
問20の文章（問20）中の次の英語の意味を、短い日本語で書きなさい。
(1) sleep deprivation = （ ）
(2) short-term memory = （ ）
長文読解
Q22. (4点)
次の英文を読んで、問いに答えなさい。
Coral reefs are among the most diverse ecosystems on Earth, often called "the rainforests of the sea." Although they cover less than one percent of the ocean floor, they are home to approximately 25 percent of all marine species. The health of coral reefs is critical not only for marine life but also for millions of people who depend on them for food, income, and coastal protection.
Corals themselves are tiny animals called polyps that live in large colonies. Each polyp has a symbiotic relationship with microscopic algae called zooxanthellae, which live inside the coral's tissue. These algae produce food through photosynthesis and give corals their vibrant colors. In return, the coral provides the algae with a protected environment and the compounds they need for photosynthesis.
When ocean temperatures rise even slightly—just one or two degrees Celsius above the normal summer maximum—corals become stressed and expel their zooxanthellae. This process, known as "coral bleaching," leaves the coral white and vulnerable. If temperatures remain high, the coral will eventually die.
Climate change is the primary threat to coral reefs worldwide. Rising ocean temperatures, combined with ocean acidification caused by increasing carbon dioxide levels, make it difficult for corals to build their calcium carbonate skeletons. Scientists estimate that if current trends continue, up to 90 percent of the world's coral reefs could disappear by 2050.
Conservation efforts are underway around the world. Marine protected areas, coral nurseries, and restrictions on overfishing are helping some reefs recover. Scientists are also researching heat-resistant coral species that might survive in warmer oceans. However, experts agree that the most effective solution is to address the root cause: reducing global greenhouse gas emissions.
問1: According to the passage, what happens during coral bleaching?
Q23. (4点)
問22の文章（問22）中の次の英語について、文脈から意味を推測し、短い日本語で書きなさい。
(1) symbiotic = （ ）
ヒント: 第2段落で、サンゴと藻類の関係を説明している部分に注目
(2) vulnerable = （ ）
ヒント: 第3段落で、白化したサンゴの状態を説明している部分に注目
Q24. (6点)
問22の文章（問22）を読み、筆者の主張を2〜3文の日本語で要約しなさい。
以下の点を含めて書くこと:
- サンゴ礁が直面している問題
- その問題に対する最も効果的な解決策
英作文（3000語レベル）
Q25. (7点)
次の3つのテーマから1つを選び、英語で3文以上書きなさい。
むずかしい単語を使う必要はありません。知っている英語で書きましょう。
テーマA: My Favorite Season（好きな季節）
テーマB: A Famous Person from Japan（日本の有名な人）
テーマC: My Favorite Food（好きな食べ物）