12.A.improve    B.suddenly    C.out of    D.keep    E.take

Do you find that when you are busy with your study on the Internet,the speed of your computer slows down (46)B sometimes?It is probably because your computer gets infected by virus (病毒),which can make it more difficult for you to use the computer.How to keep viruses (47)C your computer is a problem now.But in fact,nothing can ensure (保證) the security of your computer one hundred percent.There are,somehow some things you can do to (48)A your computer's security system and decrease (降低) the possibility of an infection.
You can (49)D your system up to date with the current anti-virus software (反病毒軟件),and use the following methods.

分析 你是否發(fā)現(xiàn)當(dāng)你在網(wǎng)上忙于學(xué)習(xí)時,有時電腦的速度突然緩慢了?這很可能是因為電腦感染了病毒,讓你使用電腦更加困難.現(xiàn)在如何讓電腦遠(yuǎn)離病毒是一個問題.但事實上,沒有什么可以保證你的電腦百分之百的安全.你可以做一些事情來提高電腦的安全系統(tǒng),降低感染病毒的可能性.你可以安裝當(dāng)下的反病毒軟件來升級更新系統(tǒng),并使用下面的這些方法.

解答 46.B.句子結(jié)構(gòu)完整,劃線處缺一個副詞修飾slows down,根據(jù)句意"有時電腦的速度突然緩慢了"應(yīng)選擇B,表示突然地.
47.C.句意是"如何讓電腦遠(yuǎn)離病毒是一個問題.",keep out of表示遠(yuǎn)離,故選擇C.
48.A.劃線處前是to,其后應(yīng)填寫一個動詞原形,根據(jù)句意"你可以做一些事情來提高電腦的安全系統(tǒng)."應(yīng)選擇A,表示提高.
49.D.劃線處前是情態(tài)動詞can,后應(yīng)跟動詞原形,句意是"你可以安裝當(dāng)下的反病毒軟件來升級更新系統(tǒng)",up to date表示最新的,keep+名詞+形容詞表示使…處于某種狀態(tài),故選擇D.

點評 本題考查選詞填空,所給詞都是適當(dāng)形式,且有一個多余選項,難度一般.本文是一篇說明文,主要講述了電腦難免會遭到病毒感染,應(yīng)該采取一些措施降低感染的可能性.考生做題時首先應(yīng)熟悉所給單詞含義,再根據(jù)句子成分、短語固定搭配及題干即可作出選擇.

練習(xí)冊系列答案
相關(guān)習(xí)題

科目:初中英語 來源:2016-2017學(xué)年廣西欽州市欽州港區(qū)八年級12月考英語試卷(解析版) 題型:單項填空

In a few years, there ________ hundreds of trees on the mountain.

A. will have B. will be C. are there D. be have

查看答案和解析>>

科目:初中英語 來源:2015-2016學(xué)年江蘇鎮(zhèn)江京口區(qū)八年級3月考英語試卷(解析版) 題型:閱讀理解

In the past ten years, many scientists have studied the differences between men and women. And they all got the same answer: The sexes(性別) are different, because their brains are different. And this, the scientists say, makes men and women see the world in different ways.

Boys, for example, generally are better than girls at mathematical(數(shù)學(xué)的) ideas. Boys also generally are better than girls at the kind of hand and eye movements necessary for ball sports. Girls, on the other hand generally start speaking earlier than boys. And they generally(通常) see better in the dark than boys and are better at learning foreign languages.

What makes men and women better at one thing or another? The answer is the brain. The brain has two sides connected by nerve(神經(jīng)) tracks. The left side generally is used for mathematics, speech and writing. The right side is used for artistic creation(創(chuàng)造) and the expression for emotions(情感). In men and women, different areas in each side of the brain develop differently. In boys, for example, it’s the area used for mathematics. In girls, it is the area used for language skills. Another interesting difference is that the two sides of a man’s brain are connected by a smaller nerves than the two sides of a woman’s brain are.

1.Which of the following is best to outline(概括) the article?

A. Research on the Brain

B. Differences Between Men and Women

C. People’s Different Brains

D. Who Are Better, Boys or Girls

2.___________ men and women think differently.

A. sex makes

B. The different brains make

C. The different experiences make

D. The influences(影響) of society make

3.According to the article, girls are generally better than boys at ________ in your school.

A. mathematics B. physics C. English D. Chemistry

4.Which of the following is true?

A. The left side of brain in boys generally develops better than that in girls.

B. The left side of brain in girls generally develops better than that in boys.

C. Men are better than women in all things.

D. The area in girls used for language skills develops better.

5. In men and women the number of nerves connecting the halves of brain________ .

A. is the same

B. is different

C. is zero

D. can’t be found out

查看答案和解析>>

科目:初中英語 來源:2015-2016學(xué)年江蘇鎮(zhèn)江京口區(qū)八年級3月考英語試卷(解析版) 題型:單項填空

---Do you want to watch the lion dance?

---No, I ________ it the day before yesterday.

A. saw B. have seen

C. see D. was seeing

查看答案和解析>>

科目:初中英語 來源: 題型:閱讀理解

7.
Ballet NY
Dancing can provide an outstanding cardiovascular (心血管的) workout,but this week the members of Ballet NY come to Pittshurgh to dance for people whose hearts need help.The performance will benefit the Artificial Heart Program of the Heart,Lung and Esophageal Surgery Institute of UPMC.Ballet NY was founded 10years ago by former New York City Ballet principal ballerina Judith Fugate and internationally famous dancer Medhi Bahiri,and former members of top dance companies.The performance starts at 8p.m.Wednesday at the Byham Theater,Downtown.
Admission:35~125.
The top price includes post-concert coffee and dessert reception with the dancers.
Details:412-453-7777.
Classic rock,literally
Mannheim Steamroller will bring a breath of"Fresh Air"to the Benedum Center,Downtown,Monday.The band,which blends (交融) classical and rock influences with electronic and ancient instruments,is on the road in its"Fresh Air"tour.The name comes from a series of eight albums with that title.Music begins at 8p.m.
Admission:40,50or 60.
Details:412-456-6666.
Expansive endeavors
Outdoors adventure goes beyond fun.It is a way of encountering the weakness of our existence and seeing ourselves as rather small creatures after all.The Banff Mountain Film Festival helps us see that with movies that also are just downright good.Sponsored here by Venture Outdoors,the festival will be at 7p.m.Thursday and Friday at the Byham Theatre,Downtown,with different films each night.
Admission:10,or 15for both nights,in advance﹙提前﹚; 15at the door.
Details:412-255-0564.
In bloom
Children with spring fever (春倦癥) can find an outlet on Saturday at the Frick Art& Historical Center,which is hosting"Green Kids-What's up?"The program brings children aged 4-8into the garden on Frick's Point Breeze grounds,so that they can see what flowers are coming up in the early spring.The program,which runs 11-11:45a.m.,is free and includes an interactive tour and take-home activity.Meet in the Visitors'Center at the Frick,7227Reynolds St.,Point Breeze.
Details:412-371-0600.
31.Where can you enjoy a program for free?C
A.Classical rock,literally.
B.Expansive endeavors.
C.In bloom.
D.Ballet NY.
32.If a person with heart problem goes to Ballet NY,he willA.
A.enjoy some wonderful dances          
B.be cured of his illness
C.dance on the stage                   
D.drink coffee for free
33.If you are a music fan,you should go toB.
A.Expansive endeavors     
B.Classical rock,literally     
C.Ballet NY          
D.In bloom
34.If three adults go straight to the Byham Theatre and buy tickets just before the festival starts,how much will they spend?C
A.40.   
B.30.   
C.45.    
D.35.

查看答案和解析>>

科目:初中英語 來源: 題型:閱讀理解

17.On a very hot day,it is hard to know what to do to feel good.If you run around,you may feel sick in your stomach.However,if you just sit quietly and do nothing,you may feel bored.Are there things you can do to feel good and have fun when you're hot?
Perhaps playing in water is a good choice to make you cool down..Taking a cool bath or shower,or even washing toys in a pan of cool water can also make you feel good on a hot day.
In addition,it's very important for you to drink water.On hot days,you can lose about 16glasses of water in one day.If you feel thirsty,you are already short of  water.So don't wait for thirst before you start to drink.You should try to drink as much water as you lose every day.Mixing a little fruit juice into your water is a fun way to help you drink plenty of water.
The food you eat also makes a difference in how you feel in the heat.Cold food such as ice cream and drinks with some ice can cool down your body.Fruits and vegetables are also helpful to stay cool in hot weather.So plan a healthy menu for a hot day-one that doesn't need any cooking.

76.判斷正誤("T"表示正確"F"表示錯誤)
It's easy to know what to do to feel good on a hot day.F
77.完成句子.We loseabout 16 glasses of waterone day in hot weather.
78.簡略回答問題
How many ways can make you feel good and have fun when you're hot?3/Three
79.在文中找出并寫下與下列句子意義相近的句子.
You need to drink before you feel thirsty.Don'twaitforthirstbeforeyoustarttodrink
80.對文中劃線句子,以特殊疑問句的形式提出一個問題What are also helpful to stay cool in hot weather.

查看答案和解析>>

科目:初中英語 來源: 題型:選擇題

4.Look!______students are doing sports on the playground.( 。
A.HundredsB.Two hundredC.Hundreds ofD.Two hundreds of

查看答案和解析>>

科目:初中英語 來源: 題型:選擇題

1.-Let me help you.
-Thanks.
-That's OK.( 。
A.That's right.B.You're welcome.C.Good.D.It's right.

查看答案和解析>>

科目:初中英語 來源: 題型:填空題

2.Many people came to these areas to hunt fortreasure/'tre??/.

查看答案和解析>>

同步練習(xí)冊答案