Unit 12 Life is full of the unexpected. Section B 1a-1e 课时练习（含答案） 2024-2025学年人教版英语九年级全册

Unit 12 Section B (1a-1e) 课时练习
一　根据语境、 音标或所给单词的提示， 在每个空格内填入一个恰当的词。
1. —How was the party last night？
—Wonderful！ I was happy that Linda 　 　 / n va t d/ me to go there.
2. —Has someone ever played a 　 on you on April Fool’s Day？
—Yes， my best friend did that！
3. When I got there， I found I was the only person 　 （wear） a costume.
4. I was very 　 / m b r st/ because of being found cheating in the exam.
5. —Mary， you looked so tired today. What’s wrong？
—Oh， I stayed up late all night 　 　 for today’s math exam.
二、单项选择。
（　 　）1. —Do you have fun at the party？
—Sure. It is an excellent party 　　　　 I will always remember.
A. that B. what C. why
（　 　）2. —Do you know 　　　　 beautiful watch it is？
—Oh， it’s Mary’s. She’s been looking for it for a long time.
A. how B. what C. whose
（　 　）3. She is angry with her son， but she will help him. 　　　　 ， he is her only son.
A. After all B. By accident C. For instance
（　 　）4. The magician put a bird into the box， but it 　　　　 when he opened the box.
A. failed B. disappeared C. increased
（　 　）5. —Don’t feed the animals in the zoo， Jack！ — 　　　　 .
A. Not at all B. It’s my pleasure C. Sorry， I won’t do it again
三、看图写话。
on， every year 　 　 　 　 　 　 　 　
stay， last night 　 　 　 　 　 　 　 　
like， fun 　 　 　 　 　 　 　 　
when， realize 　 　 　 　 　 　 　 　
party， now 　 　 　 　 　 　 　 　
四、句子还原。
A. Take peacocks for example. B. But their roles are quite different. C. Similarly， present-day kangaroos use their tails for balance. D. Although humans don’t have tails like monkeys， our ancestors did have tails. E. As these fish developed into creatures that lived on the land， their tails started to change too.
Why Do Animals Have Tails？
Scientists have found fossils（化石） of animals with tails dating back hundreds of millions of years. Back then， early fish used their tails as fins to swim through the ocean， and avoid enemies. 1. 　 　
Scientists believe that dinosaurs swung their tails side to side to balance their heavy heads and bodies while walking on two legs. This movement allowed them to run fast enough to catch their prey（猎物）. 2. 　 　 But their tail isn’t just for balance—it also works as a powerful third leg that can help push them forward through the air. In addition， a monkey’s tail can also act like a hand， allowing it to hold onto tree branches.
Many insects also have tails. 3. 　 　 Most tailed insects use their tails to lay eggs. Birds use their tails both to balance while sitting on trees and to control directions and reduce drag（阻力） while flying. Some birds also use their tails for mating（交配）. 4. 　 　 Male ones will spread their colorful tails to attract female ones.
Besides， animals that live in groups， like wolves， use different tail positions to show their rank（地位）.
5. 　 　 Scientists believe those tails disappeared from our human ancestors around 20 million years ago. Once they started walking upright， they no longer needed tails to help with balance.
答案
一、 1. invited 解析：根据音标可知是“invited”，意为“邀请”。 2. trick 解析：“play a trick on sb.”意为“捉弄某人”。 3. wearing 解析：“the only person wearing a costume”，现在分词作后置定语，修饰“person”。 4. embarrassed 解析：根据音标可知是“embarrassed”，意为“尴尬的”。 5. preparing 解析：“stay up late doing sth.”意为“熬夜做某事”，“prepare for”意为“为……做准备”。 二、 1. A 解析：先行词是“party”，在定语从句中作宾语，用关系代词“that”。 2. C 解析：根据回答“Oh, it’s Mary’s.”可知是问“这是谁的漂亮手表”，用“whose”。 3. A 解析：“After all”意为“毕竟”；“By accident”意为“偶然”；“For instance”意为“例如”。根据语境“她会帮助他，毕竟他是她唯一的儿子”，选 A。 4. B 解析：“failed”意为“失败”；“disappeared”意为“消失”；“increased”意为“增加”。根据语境“魔术师把鸟放进盒子，但打开盒子时鸟消失了”，选 B。 5. C 解析：对于别人的提醒“不要在动物园喂动物”，应该表示抱歉，“Sorry, I won’t do it again.”意为“对不起，我不会再这样做了”。 三、 1. There is a party on every year. 2. I stayed up late last night. 3. They like having fun. 4. When did you realize that 5. They are having a party now. 四、 1. E 解析：前文提到鱼用尾巴游泳和躲避敌人，此句接着说鱼发展成陆地生物时尾巴的变化，E 选项符合。 2. B 解析：前文说恐龙用尾巴保持平衡，此句说但尾巴不止用于平衡，有转折和补充的意思，B 选项符合。 3. A 解析：前文说很多昆虫有尾巴，此句以孔雀为例，A 选项符合。 4. C 解析：前文说一些鸟用尾巴的情况，此句说如今的袋鼠用尾巴保持平衡，C 选项符合。 5. D 解析：最后说人类祖先的尾巴情况，D 选项符合。