2026年精彩练习就练这一本八年级英语下册外研版评议教辅第45页答案
五、阅读理解
Mark's class planted fruit and vegetables in the school's garden. Mark liked watering them and he especially liked watching the plants grow best. One morning, Mark stopped to check the garden. He saw something surprising. He hurried into his classroom. "Mr James!" he shouted to his teacher worriedly. "The cabbage is covered with insects! I think they're eating it! Please do something to save our plants!" Mr James just smiled. He showed Mark a small box. "Don't worry, Mark. I think I know what caused the problem. There's something in this box that might help."
Mr James led his class out to the garden. "Insects called aphids(蚜虫) are eating our cabbage," he said. "We can use what we know about food chains(链) to work out the problem." Mr James said and then carefully opened the small box, and another kind of insect—ladybugs(瓢虫) flew out! "Ladybugs?" asked Mark, "How can they help?"
Mr James smiled again. He pointed to the cabbage and said, "Cabbage is a producer, and aphids are customers that are eating the cabbage. Ladybugs are customers, too. But they like to eat aphids. Let's just wait and see what will happen over the next few days."
For the next week, Mark watched as the aphids died off day by day. One morning he came to the garden to study the cabbage. He saw that it looked healthy and strong. There were no more aphids on it, either! What Mr James did really worked!
(
D
)1. What did Mark notice in the garden one morning?
A. The insects all died.
B. Mr James was opening a small box.
C. The fruit and vegetables were gone.
D. The cabbage was covered with aphids.
(
C
)2. How did Mr James solve the problem?
A. He planted more cabbages.
B. He asked an expert for help.
C. He brought some ladybugs to help.
D. He led the students to catch the aphids.
(
C
)3. What do we know from the last paragraph?
A. The ladybugs died off day by day.
B. Mr James failed to solve the problem.
C. The cabbage were saved and grew well.
D. There are more and more ladybugs on the cabbage.
(
A
)4. What can we learn from the story?
A. Put what we learn into practice.
B. Ask for help if we are in danger.
C. Try our best to get close to nature.
D. Be ourselves and find our own hobbies.

答案

1.D 2.C 3.C 4.A

解析

【分析】
解答这类英语阅读理解题,需先通读全文理解文章大意,再针对每个问题定位原文关键信息,逐一匹配选项。第1题需查找Mark早上在花园的发现;第2题需明确老师解决问题的方法;第3题需分析最后一段的内容;第4题需提炼文章主旨。
【解析】
1. 定位原文第一段Mark的表述“The cabbage is covered with insects! I think they're eating it!”,结合后文老师说明这些昆虫是蚜虫(aphids),可知Mark发现卷心菜上覆盖着蚜虫,对应选项D。
2. 定位原文第二段,老师打开盒子放出瓢虫(ladybugs),并指出瓢虫以蚜虫为食,以此解决卷心菜的虫害问题,对应选项C。
3. 定位最后一段“it looked healthy and strong. There were no more aphids on it”,说明卷心菜被成功救治且长势良好,对应选项C。
4. 文章中老师运用学到的食物链知识解决虫害问题,体现了将所学知识应用于实践的道理,对应选项A。
【答案】
1.D 2.C 3.C 4.A
【知识点】
英语阅读理解、细节理解题、主旨大意题
【点评】
本文通过讲述老师利用生物知识解决花园卷心菜虫害的故事,考查学生对英语阅读细节的把握和主旨的提炼,题目设置合理,贴近学生学习实际。
【难度系数】
0.7