A
The bus was full of the sounds of laughing and yelling fifth graders. They were on their way to the zoo for a class trip. Mario was excited to see the zoo, but there was one problem. It was ten o'clock in the morning, but his stomach was already grumbling (咕咕叫). He reached down and grabbed his lunch bag. Opening it, he saw that it contained a peanut butter and jelly sandwich, an orange, and two cookies. Mario sighed. He always had peanut butter and jelly.
“Trade lunches，” he said to the boy seated next to him on the bus.
“Okay，” said Mark as he handed his brown bag to Mario.
Mario opened it and was hit with the smell of tuna (金枪鱼). Mario wrinkled his nose and quickly closed the bag. He leaned forward and tapped the shoulder of the girl in front of him. “Swap lunches, Toni？” he asked.
“Hmm, okay，” said Toni.
Mario smiled. This was fun. But when he looked into the bag, he frowned. What a disappointment! A ham sandwich, but no cookies! He had to have cookies.
Mario turned in his seat. “Want to trade lunches？” he asked Juana.
“Definitely！” said Juana. She grabbed his lunch and tossed hers onto his lap.
He opened the lunch bag. Pizza! He reached into the bag to grab it. Oh, no! The pizza was hard. He_could_hit_a_home_run_with_pizza_that_
hard.
Mario twisted in his seat. One last try, he told himself. “Hey, Mona! Trade lunches？”
Three rows behind him, Mona seemed hesitant: Finally, she nodded. She passed her lunch forward, and he passed his back.
Mario took a deep breath and opened the bag. It was a peanut butter and jelly sandwich, an orange, and two cookies. The sandwich was a little squashed (挤压), and one of the cookies was broken.
Mario ate it anyway. And it was delicious.
本文是一篇记叙文。文章讲述了Mario因为对自己的午餐不满意，多次跟同学交换午餐，一次次不满意之后，最后竟然换回原本自己带的午餐，结果发现自己带的午餐比其他人的好多了，味道不错。
21．Mario trade lunches so many times because ________.
A．each lunch he received was dissatisfying
B．his curiosity was aroused with each trade
C．he needed something interesting to kill time
D．he preferred more food to settle his stomach
答案：A
解析：推理判断题。根据Mario每次跟同学交换午餐前的描述Mario sighed. He always had peanut butter and jelly...Mario wrinkled his nose and quickly closed the bag.... But when he looked into the bag, he frowned. What a disappointment！...可知，Mario多次跟同学交换午餐是因为对自己的午餐不满意。故A选项正确。
22．In the underlined sentence (Paragraph 9), the author is comparing the pizza to ________.
A．leftover food B．a baseball bat
C．homemade bread D．a difficult game
答案：B
解析：推理判断题。根据第九段中的The pizza was hard. He could hit a home run with pizza that hard.(比萨饼很硬。他可以用硬的披萨打出全垒打。)可知，作者将Mario的披萨比喻成了棒球。故B选项正确。
23．What does the author intend to tell us?
A．Friends are there when you need them.
B．You should be content with what you have.
C．If you want something done right, do it yourself.
D．There is always something better around the corner.
答案：B
解析：推理判断题。根据最后一段中的Mario ate it anyway. And it was delicious.(马里奥还是吃了它。它很美味。)可推知，作者想要告诉我们应该满足于我们所拥有的东西，它们并没有想象的那样糟糕。故B选项正确。
