单选题
AThe ensign should be hoisted when the sun rises.
BThe ensign should be lowered when the sun rises.
CThe ensign should be hoisted when the sun sets.
DThe ensign should be lowered when the sun sets.
正确答案
答案解析
略
AThe ensign should be hoisted when the sun rises.
BThe ensign should be lowered when the sun rises.
CThe ensign should be hoisted when the sun sets.
DThe ensign should be lowered when the sun sets.