Module 3 Unit 2 We have not found life on any other planets yet 单元习题（含解析）2024-2025学年外研版八年级英语下册

外研版初中英语八年级下册Module 3 Journey to Space
Unit 2We have not found life on any other planets yet.习题
一、单词拼写
Scientists have spent years searching for ________ (外星人) life.
The ________ (太阳系) is just a small part of the Milky Way galaxy.
There is no ________ (证据) to prove that there is life on Mars.
The new telescope can help us see further into the ________ (宇宙).
It's hard to ________ (想象) what life would be like on other planets.
The spacecraft is traveling at a very high ________ (速度).
Earth is the only planet known to have ________ (氧气).
We should protect the ________ (环境) of our planet.
The astronauts are conducting ________ (实验) in space.
The ________ (最新的) research shows some interesting findings.
二、词性转换一
science (名词) 科学 → ________ (形容词) 科学的
possible (形容词) 可能的 → ________ (反义词) 不可能的
communicate (动词) 交流 → ________ (名词) 交流；通讯
develop (动词) 发展 → ________ (名词) 发展
interest (名词) 兴趣 → ________ (形容词) 感兴趣的
planet (名词) 行星 → ________ (形容词) 行星的
solar (形容词) 太阳的 → ________ (名词) 太阳
system (名词) 系统 → ________ (形容词) 系统的；有系统的
explore (动词) 探索 → ________ (名词) 探索；探险
environment (名词) 环境 → ________ (形容词) 环境的
三、英汉互译
数十亿的 ____________
太空旅行 ____________
与…… 不同 ____________
为了；以便于 ____________
到达；抵达 ____________
space station ____________
in the future ____________
make a mistake ____________
look up ____________
be up to ____________
四、单项选择
1.We ______ any life on other planets yet.
A. haven't found B. found C. have found D. didn't find
2.It's ______ for us to live on Mars without special equipment.
A. possible B. impossible C. easy D. difficult
3.The teacher told us that the earth ______ around the sun.
A. go B. goes C. went D. going
4.She ______ to the space museum last week.
A. goes B. went C. has gone D. have gone
5.They are working hard ______ get good grades.
A. so that B. in order that C. in order to D. such that
6.—Have you heard the latest news
—No, what ______
A. is it B. it is C. are they D. they are
7.My father ______ to Shanghai. He will come back in two days.
A. has gone B. has been C. goes D. went
8.There are ______ planets in the solar system.
A. eight B. nine C. ten D. eleven
五、句型转换
1.They have already finished their homework. (改为否定句)
They ______ ______ their homework yet.
2.He has been to Beijing twice. (对划线部分提问)
______ ______ times has he been to Beijing
3.The spaceship took off an hour ago. (改为现在完成时)
The spaceship ______ ______ ______ for an hour.
4.I got a letter from my friend last week. (改为同义句)
I ______ ______ my friend last week.
5.She is so young that she can't go to school alone. (改为简单句)
She is ______ young ______ go to school alone.
六、单句语法填空
She ______ (not hear) from her pen friend for a long time.
They ______ (go) to the space camp last summer.
My father ______ (work) in the space industry for 20 years.
The boy is interested in ______ (watch) space documentaries.
______ (million) of students are learning English now.
We should try our best ______ (protect) the environment.
She ______ (write) a story about space travel last week.
It's necessary for us ______ (learn) some basic space knowledge.
Have you ______ (see) the latest space movie
The scientists are busy ______ (do) experiments.
七、阅读理解
（A）
Have you ever wondered if there is life on other planets Scientists have been searching for signs of life beyond Earth for decades.
One of the places they have focused on is Mars. Mars is similar to Earth in some ways. It has a day that is almost as long as Earth's, and it has seasons. However, the atmosphere on Mars is very thin and it lacks oxygen. This makes it very difficult for life as we know it to exist.
Scientists have sent many spacecrafts to Mars to explore. These spacecrafts have taken pictures and collected samples. From these, they have learned a lot about the planet. But so far, they have not found any definite evidence of life.
In addition to Mars, scientists are also looking at other planets and moons in our solar system. They believe that there could be life in places we haven't even thought of yet.
The search for extraterrestrial life continues, and who knows Maybe one day we will find it.
1.What have scientists been doing for decades
A. Looking for life on Earth.
B. Searching for signs of life beyond Earth.
C. Building space stations.
D. Sending astronauts to Mars.
2.Why is it difficult for life to exist on Mars
A. Because it has no day and night.
B. Because its atmosphere is very thin and lacks oxygen.
C. Because it has no seasons.
D. Because it is too cold.
3.What have spacecrafts sent to Mars done
A. Only taken pictures.
B. Only collected samples.
C. Taken pictures and collected samples.
D. Nothing.
4.Besides Mars, where else are scientists looking for life
A. Only on Earth.
B. Only on the moon.
C. On other planets and moons in our solar system.
D. Nowhere.
5.What can we conclude from the passage
A. There is definitely life on other planets.
B. There is no life on other planets.
C. Scientists are still searching for life on other planets.
D. Scientists have given up searching for life on other planets.
（B）
Space travel has always been a dream for humans. In the past few decades, we have made great progress. We have sent astronauts into space, built space stations, and even landed on the moon.
However, space travel is not without risks. Astronauts have to face many challenges, such as radiation, microgravity, and the psychological pressure of being away from home.
Despite these risks, people still want to go into space. Some even pay a lot of money to experience space travel. Why Because it gives them a unique perspective on the universe and themselves.
In the future, we expect to see more people going into space. Maybe one day, space travel will be as common as air travel. But before that, we need to solve many technical and safety issues.
The future of space travel is bright, but we still have a long way to go.
6.What has been achieved in space travel in the past few decades
A. Only sending astronauts into space.
B. Sending astronauts into space, building space stations, and landing on the moon.
C. Only building space stations.
D. Only landing on the moon.
7.What are the risks of space travel
A. Only radiation.
B. Only microgravity.
C. Radiation, microgravity, and the psychological pressure of being away from home.
D. Nothing.
8.Why do some people want to experience space travel
A. Because it's cheap.
B. Because it gives them a unique perspective on the universe and themselves.
C. Because it's easy.
D. Because they have nothing else to do.
9.What can we expect in the future of space travel
A. More people will go into space.
B. Space travel will stop.
C. Space travel will be as common as air travel tomorrow.
D. Nothing will change.
10.What is the main idea of this passage
A. The achievements and risks of space travel and its future prospects.
B. Only the achievements of space travel.
C. Only the risks of space travel.
D. Only the future prospects of space travel.
答案解析
一、单词拼写答案
alien 解析：“外星人”，alien life 外星生命，作定语修饰 life，alien 作形容词时意为 “外星的；外国的”。
solar system 解析：“太阳系”，固定短语，solar 是形容词 “太阳的”，system 是名词 “系统”。
evidence 解析：“证据”，no 后接名词，根据语境及首字母提示，这里用 evidence，不可数名词。
universe 解析：“宇宙”，see further into the universe 看向宇宙更深处，universe 前常用定冠词 the。
imagine 解析：“想象”，it's + 形容词 + to do sth. 是固定句型，这里用动词原形 imagine，意为 “想象…… 是困难的”。
speed 解析：“速度”，at a very high speed 以非常高的速度，是常用短语，speed 是不可数名词。
oxygen 解析：“氧气”，根据常识，地球是已知唯一有氧气的星球，oxygen 是不可数名词。
environment 解析：“环境”，the environment of our planet 我们星球的环境，environment 是名词，常用作不可数名词。
experiments 解析：“实验”，conduct experiments 做实验，many 后接可数名词复数，experiment 的复数形式是 experiments。
latest 解析：“最新的”，the latest research 最新的研究，latest 是 late 的最高级形式，作定语修饰 research。
二、词性转换
scientific 解析：science 的形容词形式，在名词后加 -ific 构成形容词，如 biology - biological，这里 science 变为 scientific “科学的”，修饰名词。
impossible 解析：possible 的反义词，在前面加 im - ，构成 impossible “不可能的”，如 it's impossible to do sth. 做某事是不可能的。
communication 解析：communicate 的名词形式，动词后加 -ion 变成名词，communicate 变为 communication“交流；通讯”，如 means of communication 通讯手段。
development 解析：develop 的名词形式，动词加 -ment 变成名词，develop 变为 development “发展”，如 economic development 经济发展。
interested 解析：interest 的形容词形式，用来修饰人，意为 “感兴趣的”，be interested in 对…… 感兴趣，还有 interesting 用来修饰物。
planetary 解析：planet 的形容词形式，在名词后加 -ary 构成形容词，planet 变为 planetary “行星的”，如 planetary orbit 行星轨道。
sun 解析：solar 的名词形式，“太阳” 是 sun，如 the sun rises in the east 太阳从东方升起。
systematic 解析：名词后加 -atic 构成形容词，system 变为 systematic“系统的；有系统的”，如 systematic study 系统研究。
exploration 解析：动词后加 -ation 变成名词，explore 变为 exploration“探索；探险”，如 space exploration 太空探索。
environmental 解析：名词后加 -al 构成形容词，environment 变为 environmental “环境的”，如 environmental protection 环境保护。
三、英汉互译
billions of 解析：固定短语，“数十亿的”，修饰可数名词复数，如 billions of stars 数十亿颗星星。
space travel 解析：space “太空”，travel “旅行”，合起来就是 “太空旅行”，是常用短语。
be different from 解析：固定短语，意为 “与…… 不同”，如 My book is different from yours. 我的书和你的不同。
in order to /so as to 解析：都表示 “为了；以便于”，后接动词原形，引导目的状语，可互换，如 In order to get good grades, we study hard. 为了取得好成绩，我们努力学习。
arrive at /in 或 get to 或 reach 解析：这几个短语都有 “到达” 之意，arrive at + 小地点，arrive in + 大地点，get to 较常用，reach 是及物动词，直接接地点，可根据语境选用，如 We arrived in Beijing yesterday. 我们昨天到达北京。
太空站 解析：space “太空”，station “站”，合起来就是 “太空站”，是航天术语，如 The astronauts live in the space station. 宇航员们住在太空站。
在将来 解析：固定短语，in the future 表示未来的时间，常作状语，如 In the future, we will have more robots. 将来，我们会有更多机器人。
犯错误 解析：make “制造”，mistake “错误”，make a mistake 是常用短语，意为 “犯错误”，如 He made a mistake in his calculation. 他在计算中犯了一个错误。
查阅；向上看 解析：look up 有两个常见意思，查阅资料等，或者单纯指抬头向上看，如 I looked up the word in the dictionary. 我在字典里查了这个词。
由…… 决定；是…… 的职责 解析：be up to sb. 由某人决定，固定短语，如 It's up to you to choose. 由你选择。
四、单项选择答案
A 解析：根据 “yet” 可知是现在完成时的否定句，结构为 haven't/hasn't + 过去分词，主语是 we，用 haven't found，所以选 A。
B 解析：根据常识，没有特殊设备在火星上生活是 “不可能的”，it's + 形容词 + for sb. to do sth. 是固定句型，这里用 impossible，所以选 B。
B 解析：宾语从句中，若表达客观真理，无论主句是什么时态，从句都用一般现在时，地球绕着太阳转是客观真理，主语是 the earth，谓语动词用 goes，所以选 B。
B 解析：“last week” 是一般过去时的标志，go 的过去式是 went，所以选 B。
C 解析：so that 和 in order that 后接句子，in order to 后接动词原形，这里 get 是动词原形，所以选 C。
A 解析：news 是不可数名词，用 it 指代，此句是特殊疑问句，语序为疑问词 + 一般疑问句，所以选 A。
A 解析：has gone to 表示 “去了某地（还没回来）”，has been to 表示 “去过某地（已回）”，根据 “He will come back in two days.” 可知选 A。
A 解析：太阳系中有八大行星，这是常识，所以选 A。
五、句型转换答案
haven't; finished 解析：现在完成时的否定句，在 have/has 后加 not，这里主语是 They，用 haven't，后接动词过去分词 finished，所以填 haven't; finished。
How; many 解析：对次数提问，用 How many，修饰可数名词复数 times，所以填 How; many。
has; been; off 解析：现在完成时，主语是 The spaceship，take off “起飞”，是短暂性动词，转化为延续性动词为 be off，所以填 has; been; off。
heard; from 解析：get a letter from = hear from“收到…… 的来信”，原句是一般过去时，所以这里也用 heard from，所以填 heard; from。
too; to 解析：so... that... 引导的结果状语从句，可转换为 too... to... 结构，“太…… 而不能……”，所以填 too; to。
六、单句语法填空答案
hasn't heard 解析：根据 “for a long time” 可知是现在完成时，主语是 She，否定形式为 hasn't + 过去分词，hear 的过去分词是 heard，所以填 hasn't heard。
went 解析：“last summer” 是一般过去时的标志，go 的过去式是 went，所以填 went。
has worked 解析：根据 “for 20 years” 可知是现在完成时，主语是 My father，用 has worked，所以填 has worked。
watching 解析：be interested in doing sth. 对做某事感兴趣，in 是介词，后接动名词 watching，所以填 watching。
Millions 解析：Millions of 是固定短语，“数百万的”，表示概数，修饰可数名词复数，所以填 Millions。
to protect 解析：It's necessary for sb. to do sth. 对某人来说做某事是必要的，to 后接动词原形 protect，所以填 to protect。
wrote 解析：“last week” 是一般过去时的标志，write 的过去式是 wrote，所以填 wrote。
to learn 解析：It's necessary for sb. to do sth. 对某人来说做某事是必要的，to 后接动词原形 learn，所以填 to learn。
seen 解析：现在完成时，Have 后接动词过去分词，see 的过去分词是 seen，所以填 seen。
doing 解析：be busy doing sth. 忙于做某事，所以填 doing。
七、阅读理解答案
B 解析：根据 “Scientists have been searching for signs of life beyond Earth for decades.” 可知选 B。
B 解析：根据 “However, the atmosphere on Mars is very thin and it lacks oxygen. This makes it very difficult for life as we know it to exist.” 可知选 B。
C 解析：根据 “These spacecrafts have taken pictures and collected samples.” 可知选 C。
C 解析：根据 “In addition to Mars, scientists are also looking at other planets and moons in our solar system.” 可知选 C。
C 解析：文章开篇提出科学家寻找地外生命，接着讲对火星的探索及未找到生命证据，最后说仍在继续寻找，所以选 C。
B 解析：根据 “In the past few decades, we have made great progress. We have sent astronauts into space, built space stations, and even landed on the moon.” 可知选 B。
C 解析：根据 “Astronauts have to face many challenges, such as radiation, microgravity, and the psychological pressure of being away from home.” 可知选 C。
B 解析：根据 “Because it gives them a unique perspective on the universe and themselves.” 可知选 B。
A 解析：根据 “In the future, we expect to see more people going into space.” 可知选 A。
A 解析：文章先讲太空旅行成就，再谈风险，最后展望未来，所以选 A。