第二节 语法选择（每小题1分，共10分）
A farmer named Ah Mao grew many green onions. One day, he loaded his cart with green onions and took them to the market to sell. However, he set his prices a bit too high. When people asked about the price, they all shook their heads and walked 21
D
. He decided to sell his onions at a 22 price.
Just then, a vegetable trader came. He looked at the onions and asked, “How 23 for the onions?”
“Ten cents per kilo (公斤) for the whole cart!” said Ah Mao.
The trader replied, “Friend, I use the stems and leaves 24. I'll pay seven cents per kilo for the stems and three cents for the leaves. I'll take 25. Do we have a deal?”
Ah Mao thought: Seven cents plus three cents is ten cents—26 price is the same.
“Alright,” he agreed. “27 all of them.”
The trader smiled. “It's a deal! Let's weigh them now.”
Ah Mao borrowed a knife and quickly separated the stems and leaves. After 28, calculating and paying, Ah Mao happily drove his cart home.
After dinner, as Ah Mao 29 his money, he was shocked. The money was nearly half as much as usual. He lay awake all night, thinking hard. The stems were seven cents…the leaves three cents…30 did the money go?
21. A. around B. over C. behind D. away
