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】本题为英语七选五还原信息题,解题思路如下:①先通读全文把握主旨:文章围绕“新型农场除草机器人”展开,依次介绍传统除草剂的弊端、新型机器人的优势、工作原理、节能特点、发展方向及生态意义;②逐个分析每个空的前后语境,结合选项的语义和逻辑关系匹配:空1前讲除草剂的危害,后引出机器人的优势,需转折引出新事物,选D;空2后详细说明机器人的运作流程,对应“机器人如何工作”,选A;空3前提机器人节能,需补充节能方式,选C;空4前说机器人不完美,后讲改进模型,对应“科学家改进设计”,选F;空5后讲支持野生动物,对应“平衡生态”,选E。
【解析】1. 空1前指出传统除草剂的危害,空1后介绍新型除草机器人的优势,需转折引出该机器人,故选D;2. 空2后详细描述机器人的摄像头、识别植物、喷药等运作过程,对应“机器人的工作原理”,故选A;3. 空3前提及机器人节能,需补充节能的具体方式(太阳能供能),故选C;4. 空4前说机器人不完美,空4后介绍改进后的模型,对应“科学家正在改进设计”,故选F;5. 空5后说明机器人会留无害杂草支持野生动物,对应“帮助构建平衡生态”,故选E。
【答案】1.D 2.A 3.C 4.F 5.E
【知识点】英语七选五、语境逻辑匹配
【点评】本题考查英语阅读理解中七选五题型的解题能力,要求学生把握语篇的逻辑衔接关系,结合上下文语义选择合适的句子,难度适中,是常见的英语题型。
【难度系数】0.5