Q1. What is the passage mainly about?

1. AHow to make a desk
2. BWhether standing at work is really healthier
3. CWhy people in Britain wear watches
4. DHow to sleep well at night

第2文 But is standing better? が問いで、立つことの健康への影響を調べた話なので B。

Q2. How did the researchers check the adults?

1. AThey asked them to write diaries.
2. BThey watched them at work.
3. CThey used a small machine on their wrists.
4. DThey called them every day.

with a small machine on their wrists とあるので C。

Q3. In this passage, "lower" means ...

1. Amake something smaller or less
2. Bmake something louder
3. Cmake something longer
4. Dmake something new

lower は動詞で「下げる・減らす」。did not lower the risk で「リスクを下げなかった」なので A。

Q1. What is the main point of the passage?

1. AStanding desks prevent heart disease.
2. BSitting for ten hours a day is healthy.
3. CWrist devices are not accurate.
4. DSimply standing more did not protect the heart and may cause other problems.

立つ時間は心臓病リスクと関連せず、立ちすぎは血流の病気と関連したという内容なので D。

Q2. What was linked to an 11% higher risk of circulation problems?

1. AEvery extra 30 minutes of standing beyond two hours a day
2. BEvery extra hour of sleep
3. CSitting less than ten hours a day
4. DWalking for 30 minutes

for people who stood more than two hours a day, every extra 30 minutes was linked to an 11% higher risk とあるので A。

Q3. Why does blood collect in the legs when we stand still?

1. ABecause the heart stops working
2. BBecause standing desks are too high
3. CBecause the calf muscles do not pump it back
4. DBecause we drink too much water

最終文 because the calf muscles do not pump it back とあるので C。

Q1. What assumption did the 2024 study test?

1. AThat wrist devices cause heart disease
2. BThat replacing sitting with standing protects health
3. CThat walking is better than running
4. DThat older adults sit more than young people

第1文の the promise that replacing sitting with standing would undo the harms を A 2024 study tested this assumption で検証しているので B。

Q2. Which is mentioned as a limitation of the 2024 study?

1. AIt included only Canadian workers.
2. BIt lasted only one day.
3. CIt did not measure sitting time.
4. DActivity was measured for only about a week.

activity was measured for only about a week, and the algorithm may misclassify some postures とあるので D。

Q3. What is the author's final message?

1. AChanging position and moving regularly matter more than just standing.
2. BSit-stand desks should be banned.
3. CPeople should sit for at least ten hours a day.
4. DStanding still is the best exercise.

最終文 the real goal is not standing still; it is changing position and moving regularly とあるので A。