Question

【题目】It’s polite to ______.

A. speak loudly in public

B. smoke on the bus

C. drop litter everywhere

D. say “Thank you” when someone helps you

Answer 1

【答案】D

【解析】

试题分析：句意：当有人帮助了你，你说谢谢这是礼貌的行为。此题考查常识，A在公共场合大声说话；B在公交车上吸烟；C到处乱扔垃圾。根据句意，应选D。