公務人員特種考試外交領事英文106 年第 21 題單選題
What is the main idea of this passage?
APhysical exercise is good to one's memory.
BThe two hemispheres of the brain function differently.
CFist clenching may influence the way the brain functions.正確答案
DRight-handed and left-handed people differ in their memory power.
C正確答案
本文主旨為握拳動作可能影響大腦運作方式，選項C正確點出核心概念。
逐選項解析
APhysical exercise is good to one's memory.✕ 錯誤
運動對記憶的益處並非本文主旨，僅為可能的延伸話題，未涵蓋握拳與大腦的核心論述。
BThe two hemispheres of the brain function differently.✕ 易錯陷阱
大腦兩半球功能差異雖可能在文中提及，但僅為支持論點的細節，非全文主旨。
CFist clenching may influence the way the brain functions.✓ 正確
DRight-handed and left-handed people differ in their memory power.✕ 易錯陷阱
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