2021版高考英语一轮复习Unit2Cloning达标巩固练含解析新人教版选修82021091841

2021版高考英语一轮复习Unit2Cloning达标巩固练含解析新人教版选修8202109184139
李仕才
***阅读明白得。

The Internet plays a big part in human life. We use it for work and entertainment. We can find new recipes on the Internet or advice on staying healthy. We can even use it to learn a new language. We use the Internet to connect with family and friends and stay in touch with issues we care about.
The list goes on and on.
As far as the Internet being a part of our lives—well, that train has left the station. That expression means there is no going back. If you prefer boating, you can say that ship has sailed.
So, there may be no going back to an Internet-free life. But can using the Internet too much be bad for our health?
It might be, say researchers.
Study results show that teens who spend at least 14 hours a week online were more likely to have high blood pressure.
High blood pressure makes your heart and blood vessels work too hard. Over time, this extra strain increases your risk of a heart attack or stroke.
High blood pressure can also cause heart and kidney disease. It is also closely linked to some forms of dementia, a brain disease. Dementia is marked by memory disorders, personality changes, and a reduced ability to reason.
Let’s introduce something about the study of it.
The Henry Ford Hospital in Detroit, Michigan did the study. It involved 335 young people, from 14 to 17 years old. One hundred thirty-four of the teens were described as “heavy Internet users”. Researchers found that out of these 134 teens, 26 had high blood pressure.
The researchers say the study is the first to connect heavy web use and high blood pressure. Other research has connected that heavy Internet use with health problems including anxiety, depression and obesity.
The lead researcher of the study is Andrea Cassidy-Bushrow. In a statement she said, “Using the Internet is part of our daily life but it shouldn’t consume us. ”
For the purpose of the study, she explains, teens considered heavy Internet users were online on “average 25 hours a week. ”
Ms Cassidy-Bushrow adds that it is important for teens to take “regular breaks from their computers or smartphones” and to do some “kind of physical activity. ”
She also suggests that parents limit their children’s use of the Internet to two hours a day, five days a week.
【文章大意】互联网如此有用同时融入我们的生活, 但过度使用它, 会导致多种健康问题。

1. The first two paragraphs mean that ________.
A. the list of the function of the Internet is too long to be endless
B. the Internet has too many uses to count
C. the number of the people in the world using the Internet is too many to count
D. the list of the uses of the Internet is being lengthened day by day
【解析】选B。

细节明白得题。

由第一句“The Internet plays a big part in human life. ”和第二段“The list goes on and on. ”可知, B项符合题意。

2. The reason of increasing peopl e’s risk of a heart attack or stroke is that ________.
A. they use the Internet too much
B. they pay little attention to their health
C. high blood pressure makes their heart and blood vessels work too hard
D. using the Internet too much makes their heart and blood vessels work too hard 【解析】选C。

细节明白得题。

由第七段“High blood pressure makes your heart and blood vessels work too hard. Over time, this extra strain increases your risk of a heart attack or stroke. ”高血压使得人们的心脏和血管超负荷运行。

长此以往, 这种超负荷运行会增加心脏病和中风发生的风险。

” 可知C项正确。

3. Which of the following may using the Internet too much contribute to besides teenagers’ high blood pressure?
A. Anxiety, depression and obesity.
B. Memory disorders, and personality changes.
C. Dementia, a brain disease.
D. A heart attack or stroke.
【解析】选A。

细节明白得题。

依照第十一段内容可知: 科研人员说研究结果说明过度使用互联网第一导致高血压。

其他研究结果说明还可导致其他健康问题, 如: 担忧、情绪低落和肥胖。

故A项正确。

4. Ms Cassidy-Bushrow suggests that the proper time children spend using the Internet should be ________.
A. 25 hours a week
B. 10 hours a week
C. 5 hours a day
D. 14 hours a week
【解析】选B。

细节明白得题。

依照最后一段: “她还建议家长应该把小孩使用互联网的时刻限制在每天两小时, 每周五天。

” 故B项正确。

***语法填空。

The truth__1__trees are vital to our life is not a secret. They provide us with food, wood and most __2__(important), oxygen. Now there is one more thing we can add to this list—blocking out harmful bacteria from water.
The discovery __3__(make) by a team consisting of scientists from the Massachusetts Institute of Technology (MIT) and high school students__4__were seeking a natural water filter—one that would help communities in developing countries that do not have __5__(accessible) to modern water filter systems.
The __6__(research), led by Professor Rohit Karnik, decided to turn to trees for help because they could allow liquid to flow through, while blocking out air bubbles.
They began by cutting 1.5－inch－wide sections of tree bark from the branches of a white pine tree. The people related then tested the wood's filtering ability by __7__(pour) water containing red dye particles of different sizes through. To their __8__(amaze), they found that it was effective in trapping all the articles. __9__(encourage), the team conducted __10__experiment, this time with water that
contained bacteria. Sure enough, the sapwood held back 99% of the bacteria, allowing only 1% to flow through.
1．________2.________3.________4.________5.________ 6.________7.________
8.________ 9.________10.________
篇章导读：本文是一篇说明文。

树木对人类至关重要，本文通过两个实验证明了树木除了能够提供食物、木材、氧气等作用外，还能够隔离细菌。

1．that 考查同位语从句的连接词。

第1空后的内容说明说明名词truth的内容，因此设空处引导同位语从句，只起连接作用，不作成分。

故填that。

2．Importantly 考查词性转换。

此处表示“最重要的是”，应用副词形式，构成固定短语most importantly，故填importantly。

3．was made 考查动词的时态和语态。

分析句子结构可知，此处动词在句中作谓语。

依照全文主体时态为一样过去时可知，该句也应用一样过去时；make与discovery之间为动宾关系，故应用被动语态。

4．who/that 考查定语从句的引导词。

设空处引导定语从句，在从句中作主语，先行词是scientists and high school students，指人，故用who或that引导。

5．access 考查词性转换。

have access to为固定短语，意为“有使用……的机会”。

6．researchers 考查词性转换及名词的数。

依照本句中的decided to可知，设空处应填名词作句子主语，指“研究人员”，且由从句中的they可知，故应用复数形式researchers。

7．pouring 考查非谓语动词。

提示词为动词pour，空前为介词by，其后应用动名词。

故填pouring。

8．amazement 考查固定用法。

“to one's＋名词”为固定用法，意为“令某人……的是”，故填amazement。

9．Encouraged 考查非谓语动词。

encourage与主语the team之间为逻辑上的动宾关系，故应用过去分词形式，在句中作缘故状语。

10．another 考查限定词。

依照第10空后的内容可知，那个小组又做了另外一个实验，故填another，意为“另一个”。

***完形填空。

Falling off a boxcar and landing on my head，I lost my sight when I was four years old.Now I am thirty­two.I can __1__ remember the brightness of sunshine.It would be wonderful to see again，__2__ a tragedy can do strange things to people.
It __3__ to me that I might not have come to love life as I do now if I hadn't been blind.My parents and my teacher saw something __4__ me，and they made me want
to __5__ against blindness.
The hardest __6__ I had to learn was to believe in myself.If I hadn't been able to do that，I would have __7__ down for the rest of my life.When I say __8__ in myself I am not talking about __9__ the kind of self­confidence that __10__ me down an unfamiliar staircase(楼梯)alone.But I mean something bigger than that：the assurance that I am a real positive person __11__ imperfections.
It took me years to obtain this __12__.It had to start with the __13__.Once a man gave me an indoor __14__.“I can't use this，”I said.“Take it with you，” he __15__ me，“and roll it around.”The __16__ stuck in my head.“Roll it around！” By rolling the ball I could hear where it went.This gave me an idea how to achieve a goal I had thought __17__. At the School for the Blind I __18__ a new kind of baseball called the “ground ball”．All my life I have set a series of goals and then tried to reach them，one at a time.I had to learn my __19__.I would fail sometimes anyway but on the average I made __20__.
1．A.randomly B．abruptly
C．roughly D．completely
2．A.so B．but
C．thus D．and
3．A.occurred B．referred
C．brought D．turned
4．A.of B．for
C．to D．in
5．A.get B．fight
C．find D．drop
6．A.method B．experience
C．lesson D．manner
7．A.broken B．put
C．settled D．lay
8．A.courage B．ambition
C．belief D．power
9．A.firmly B．simply
C．fairly D．slightly
10．A.stops B．helps
C．finds D．gives
11．A.despite B．besides
C．without D．unlike
12．A.description B．existence
C．accusation D．recognition
13．A.intelligence B．incident
C．trouble D．determination
14．A.chair B．baseball
C．game D．design
15．A.urged B．blamed
C．greeted D．teased
16．A.goals B．words
C．images D．ideas
17．A.valuable B．reasonable
C．impossible D．unbearable
18．A.discovered B．equipped
C．formed D．invented
19．A.limitations B．advantages
C．puzzles D．personalities
20．A.sense B．progress
C．mistakes D．decisions
【解题导语】本文是一篇夹叙夹议文。

文章要紧讲述了“我”在四岁的时候失去了视力，但通过一件小事，“我”学会了自信，并逐步取得进步的过程。

【核心词汇】tragedy悲剧imperfection缺点
on the average一样来说roughly粗略地
1．C 考查副词。

“我”四岁时失去视力，现在差不多三十二岁了。

由此可推知，此处表示“我”粗略地记得，故选C。

roughly“粗略地，大致上”。

2．B 考查连词。

依照语境可知，上下文之间是转折关系，故选B。

3．A 考查动词。

“我”想到假如“我”没有失明“我”可能可不能像现在如此热爱生活。

It occurs to sb.that...为固定句型，意为“某人想到……”。

4．D 考查介词。

“我”父母以及老师看到了“我”内在的一些东西，他们让“我”想要与失明作斗争。

依照语境可知，此处应选D。

5．B 考查动词。

参见上题解析。

fight against...“与……作斗争”。

6．C 考查名词。

“我”学到的最困难的一课(lesson)确实是要相信“我”自己。

7．A 考查动词。

假如“我”做不到那样的话，“我”可能差不多精神崩溃了。

break
down“(在健康或精神等方面)垮掉”。

8．C 考查名词。

依照上文中的“to believe in myself”可知，此处应选C项与上文相照管。

9．B 考查副词。

“我”说的信心并不仅仅(simply)指关心(helps)“我”走下生疏楼梯的自信。

10．B 考查动词。

参见上题解析。

11．A 考查介词。

尽管“我”是一个不完美的人，然而“我”是一个积极的人。

despite“尽管”，符合语境。

12．D 考查名词。

“我”花了专门多年才认识到这一点。

A项意为“描述”；B项意为“存在”；C项意为“控告”；D项意为“认识”。

13．B 考查名词。

这从一件小事开始。

A项意为“聪慧”；B项意为“小事”；C项意为“苦恼”；D项意为“决心”。

14．B 考查名词。

依照下文中的“a new kind of baseball”可知，此处指棒球。

15．A 考查动词。

依照语境可知，此处指他一直在敦促“我”。

urge“强烈要求，敦促”。

16．B 考查名词。

他所说的话(words)印在“我”的脑海中，故选B。

17．C 考查形容词。

这给了“我”一个如何实现”我”认为不可能(impossible)的目标的方法。

A项意为“有价值的”；B项意为“合情理的”；C项意为“不可能的”；D项意为“无法容忍的”。

18．D 考查动词。

在盲人学校“我”发明(invented)了一种新的被称之为“地滚球”的棒球。

A项意为“发觉”；B项意为“配备”；C项意为“形成”；D项意为“发明”。

19．A 考查名词。

“我”不得不了解自己的不足之处。

limitation“(某人或某物的) 局限性，不足之处”。

20．B 考查名词。

“我”有时会失败，但一样说来“我”取得了进步。

make progress“取得进展”。

***短文改错。

This is my fifth day at the summer camp. Life isn't exact what I expected. We have to get up early to make our beds before our teacher Miss Li come to inspect. After breakfast, we have some of free time. Yesterday morning I went fishing, but the only thing I catch was a tree branch. In the afternoon, there are different activity like horseback riding and hiking. They're fun, so nothing new for me. In the evening, everyone is assigned a different task to get dinner ready. Yesterday, I was in charge of prepare the hot dogs, but I accidentally dropped it in the fire.
The best part of camp is at night, where we sit around a campfire and tell stories.
答案：
This is my fifth day at the summer camp. Life isn't exact ①exactly
what I expected. We
have to get up early to make our beds before our teacher Miss Li come ②comes
to inspect.
After breakfast, we have some of ＼③
free time. Yesterday morning I went fishing, but
the only thing I catch ④caught
was a tree branch. In the afternoon, there are different
activity ⑤activities like horseback riding and hiking. They're fun, so ⑥but
nothing new for me. In the evening, everyone is assigned a different task to get dinner ready. Yesterday, I was in charge of prepare ⑦preparin g the hot dogs, but I accidentally dropped it ⑧them
in the
fire. The best part of ∧⑨the camp is at night, where ⑩when
we sit around a campfire and tell
stories.
难项分析：
第一处：exact→exactly 考查副词。

此处修饰谓语动词应用副词。

第六处：so→but 考查连词。

前后两分句之间为转折关系，故用but 。

第十处：where→when 考查定语从句的引导词。

此处先行词为at night ，关系词指代先行词且在从句中作时刻状语，故应用when 引导。

***。