試題詳解

38 Which of the following best describes the main idea of the passage?
(A) Regular physical activity is one of the most important things for us to improve health.
(B) A few bursts of short but intense physical activity can have positive effects on health.
(C) Moderate-intensity exercise includes brisk walking, raking the yard, and playing tennis.
(D) Sedentary lifestyles appear widespread despite being linked to chronic health conditions.