题目

—It's getting late. I'm afraid I must be going now. —OK.________． A. Take it easy  B. Go slowly C. Stay longer  D．See you 答案：D 考查交际用语。由上文的“I must be going now.”可知，两个人在互相道别，故选D项。食品店有白糖和红糖共480千克，白糖和红糖质量的比是5：3．白糖和红糖各有多少千克？