画面の読み込みが1〜2秒遅れるだけで、オンラインの宿題をやり終える数も点数も下がっていた

Q1. What is the passage mainly about?

1. AHow to write a computer program
2. BHow slow pages may affect online learning
3. CWhy math homework is too long
4. DHow to make the internet faster

ページの読み込みが遅いと、宿題をやり終える量や点数が下がったという研究を紹介しているので、正解は B。

Q2. How many school students were in the study?

1. A2,670
2. B6,707
3. C26,707
4. D55,184

「A new study looked at 26,707 school students in the US.」とあるので、正解は C。55,184 は記事にあるプログラミング学習者の人数で、この英文には出てこない。

Q3. In the passage, "pattern" means ___.

1. Aa kind of color
2. Ba result that happens again in a similar way
3. Ca type of homework
4. Da fast computer

pattern は「（くり返し見られる）傾向、型」。プログラミングを学ぶ人にも似た結果が見られたと述べているので、正解は B。

Q1. What is the passage mainly about?

1. AA study linking slow page loading to weaker online learning
2. BA new app that teaches students how to code
3. CWhy students in Latin America study math online
4. DHow teachers grade homework on the internet

2つのオンライン学習サービスの記録から、読み込みが遅いと取り組みや成績が下がったことを説明しているので、正解は A。

Q2. How did the team compare the math students?

1. AThey compared students with fast and slow internet at home.
2. BThey compared each student with themselves.
3. CThey compared students in the US and Latin America.
4. DThey compared boys and girls.

「the team compared each student with themselves」とあるので、正解は B。別々の生徒どうしを比べたのではない。

Q3. Why does the writer say the results need some care?

1. ABecause the students were too young
2. BBecause the study used only one country
3. CBecause it was not a randomized experiment
4. DBecause the scores were not recorded

最後の文に「These two studies were not randomized experiments, so the results need some care.」とあるので、正解は C。2つ目のグループは中南米が中心で、1か国だけではない。

Q1. What is the passage mainly about?

1. AHow family income decides which students can study online
2. BEvidence that brief loading delays go with weaker online learning, and its limits
3. CA randomized experiment that slowed down school websites
4. DWhy coding is harder to learn than math

2つのデータで短い読み込みの遅れと学習の低下が結びついていたことと、ランダムに割り当てたわけではないという限界を述べているので、正解は B。C は本文に「nobody in these two data sets was randomly assigned」とあり誤り。

Q2. Why did the team compare each student's own quick and slow page loads?

1. ATo avoid mixing in differences in family income and location
2. BBecause the platform only worked on some days
3. CTo find out which students had the fastest computers
4. DBecause teachers asked them to check attendance

「Comparing homes with fast and slow connections would mix in differences in family income and location, so the team compared each student's own quick and slow page loads.」とあるので、正解は A。

Q3. Which statement would the writer most likely agree with?

1. AThe study proves that slow pages cause lower scores.
2. BSlow pages were the only reason for lower scores.
3. CThe results are strong but leave room for other explanations.
4. DSlow pages only matter for people learning to code.

2つの大きなデータで同じ傾向を示す一方、「something else that happens at slow moments could still play a part」と別の説明の余地も書いているので、正解は C。A の「証明した」や B の「唯一の原因」は言い過ぎ。