四、还原信息
How do farmers usually kill weeds(杂草)in the fields? Many of them use chemicals(化学品)to kill weeds. The trouble is, these weedkillers also kill wildlife, pollute rivers and are bad for the fields. 1.
D
This kind of robot can cut weedkiller use by 90%. The robot is really smart because it only kills weeds but not crops.
2.
A
Several cameras are built into the robot. The cameras facing the ground take photos to help
the robot "see" the plants it passes. The robot compares(对比)each photo to a library of plant photos to decide which plants are weeds. Robot arms move to give a small dose(剂量)of weedkiller to the weeds. The robot is energy-friendly. 3.
C
How the robot will develop
The scientists think that the robot they have made isn't perfect. 4.
F
The improved model of robots will find weeds and dig(挖)them out instead of using weedkillers.
5.
E
They could be designed to leave some harmless weeds in the fields to support wildlife living there.
A. How the robot works
B. Where the robot is used
C. It is powered by the energy from the sun.
D. But scientists have created a farmyard robot.
E. Moreover, new robots will help create a more balanced ecosystem.
F. They're working on the new designs to improve the model.
G. We are very happy that people are paying attention to the ecosystem.
解析:
【分析】
本题为英语语篇还原信息题,解题思路为:先通读全文把握文章主旨,再分析每个空缺处的上下文语境,结合选项内容与逻辑关系逐一匹配。第1空后提到“这种机器人”,需先引出机器人的句子;第2空后详细介绍机器人的运作流程,需对应说明工作原理的选项;第3空前提到机器人节能,需匹配节能相关的描述;第4空前说机器人不完美,空后讲改进模型,需匹配改进相关的句子;第5空后讲生态相关内容,需对应生态主题的选项。
【解析】
1. 第1空:前文讲使用除草剂的弊端,后文提到“这种机器人”,需引出机器人的句子,选项D“但科学家创造了一种农用机器人”符合语境,故选D。
2. 第2空:后文详细介绍机器人的摄像头、对比植物、机械臂施药等运作过程,是在说明机器人的工作原理,选项A“机器人如何工作”符合,故选A。
3. 第3空:前文提到机器人节能,选项C“它由太阳能供能”是节能的具体方式,符合语境,故选C。
4. 第4空:前文说现有机器人不完美,后文提到改进后的模型,选项F“他们正在设计新模型来改进”衔接上下文,故选F。
5. 第5空:后文提到留无害杂草支持野生动物,是关于生态平衡的内容,选项E“此外,新机器人将帮助创造更平衡的生态系统”符合,故选E。
【答案】
1.D 2.A 3.C 4.F 5.E
【知识点】
英语语篇还原、语篇逻辑衔接
【点评】
本题考查学生对语篇上下文逻辑关系的理解与信息匹配能力,属于常规题型,需结合语境分析句子间的逻辑联系,难度适中。
【难度系数】
0.6