2026年经纶学典5星学霸八年级英语下册译林版第99页答案
训练2
  难度:★★★★★ 8 min : /5
“Bio - robots” are robots that look like animals. 1 >>> 词汇衔接 They are helping researchers learn more about how animals live.
Bat robot Bat flight is not simple. Its body parts fold and unfold with every wing beat. 2 >>> 词汇衔接 “If you want to make a flying robot,” said Science Focus,“don't copy bats.”
3 >>> 结构衔接 B2 is a robot made to understand bat flight. It has very thin “skin” made of silicone. Can it fly like a bat? Yes! B2 moves its wings and does sharp dives and turns,just like a real bat!
Cockroach(蟑螂)robot It has four legs instead of six,but this 4.5 - centimeter - long cockroach robot can walk and climb walls just like real cockroaches.
The 1.5 - gram robot was made for engines. The engine - maker wants tiny robots to look around inside airplane engines because humans can't go there. 4 >>> 词汇衔接 The robot uses electricity to stick to walls. Engineers tested it inside an airplane engine. It stuck on better than a real insect,according to Science Focus.
Guppy(孔雀鱼)robot Some people think fish are stupid,but there are still many things we can learn about them.
German researchers now use a robotic fish to better understand group behavior in guppies. The team put a 3D - printed guppy under the fish tank. It copied the speed and direction of a fish partner,who thought the printed guppy was real. 5 >>> 词汇衔接 When they swim faster,they swim better together.
A. But that's what researchers did in the US.
B. Robot makers often look to nature for new ideas.
C. They can fly like birds,swim like fish,or move like insects.
D. Researchers learned that swimming speed is important to guppies.
E. To meet their needs,engineers thought about cockroaches' sticky feet.
F. They want the robot to look like a cockroach,act like one,and be the right size.
G. The force made by their wings comes from a strong but flexible(灵活的) piece of skin.
1.
C
2.
G
3.
A
4.
E
5.
D

答案

训练2【语篇解读】本文是一篇说明文。文章主要介绍了三种仿生机器人。
1. C 根据上文“‘Bio-robots’ are robots that look like animals.”可知此处应进一步介绍仿生机器人的特点;C项的“They”指代上文的“Bio-robots”,“birds”“fish”和“insects”是上下文“animals”的上下义词复现。故选C。
2. G 根据上文“Its body parts fold and unfold with every wing beat.”可知此处应进一步介绍蝙蝠的翅膀;G项的“wings”是上文的原词复现。故选G。
3. A 根据上文“‘If you want to make a flying robot,’ said Science Focus, ‘don't copy bats.’”不建议模仿蝙蝠来制造飞行机器人和下文对蝙蝠机器人的介绍可知,此处承上启下,美国研究员们发明了蝙蝠机器人。故选A。
4. E 根据上文“The engine-maker wants tiny robots to look around inside airplane engines because humans can't go there.”可知发动机制造商需要能在发动机内检查的机器人,因此他们想到了蟑螂有黏性的爪子;E项的“sticky”是下文“stick”的同源词复现。故选E。
5. D 根据下文“When they swim faster, they swim better together.”可知孔雀鱼游得更快时会游得更好,由此可知游泳速度的重要性;D项的“swimming”是下文的同源词复现,“speed”和“guppies”是上文的原词复现。故选D。

解析

【分析】
本题为说明文类七选五题型,解题思路是通过分析上下文的词汇衔接(原词复现、同源词复现)、代词指代、逻辑关系(承上启下、因果)匹配选项。具体步骤:先明确全文主题为仿生机器人,再逐个分析每个空前后句的内容,寻找选项与上下文的对应线索,最后验证选项是否符合语境逻辑。
【解析】
1. 上文提到“Bio-robots are robots that look like animals”,需进一步说明这类机器人的特点;C选项中“They”指代“Bio-robots”,“birds、fish、insects”对应上文“animals”,符合语境,故选C。
2. 上文讲蝙蝠翅膀随拍打折叠展开,G选项提到“wings”,且说明翅膀的力来自灵活的皮肤,承接上文内容,故选G。
3. 上文说不要模仿蝙蝠制造飞行机器人,下文介绍B2蝙蝠机器人,A选项“美国研究员做了相关研究”起到承上启下作用,故选A。
4. 上文提到发动机需要能进入内部的微型机器人,E选项提到工程师想到蟑螂的黏脚,对应下文“stick to walls”,故选E。
5. 下文说孔雀鱼游得快时配合更好,D选项提到游泳速度对孔雀鱼的重要性,承接下文,故选D。
【答案】
1.C 2.G 3.A 4.E 5.D
【知识点】
英语七选五、语篇衔接、说明文阅读
【点评】
本题围绕仿生机器人展开,属于说明文类七选五,重点考查学生对语篇中词汇衔接、逻辑关系的把握,需结合上下文线索匹配选项,是常见的阅读理解题型。
【难度系数】
0.2