题目内容

Always forgetting your long passwords(密码)? Worried about being hacked(被攻击)?All these worries will soon become history. Scientists have found that upper-casing(大写)your password can help you reduce the chance being hacked.
Usually passwords are six letters or more.However,50 percent of people choose a common word or simple key combination for their password. The most used passwords are 123456, abcdef and abc123. In fact, if your passwords are in lower-case(小写),it will be easily hacked by a hacker. According to a study, it only takes a hacker ten minutes to hack a six-letter password which is in lower-case, but if you make the letter in upper-case, it can take up to ten hours. So if you want to make your account much safer, you should make your password upper-case. Of course, you can also add numbers or symbols to your password. Most of the time a hacker’s computer has to work for 18 days to break a password, but if you choose a nine-letter password that includes numbers and symbols, it can take a hacher’s  computer 44,530 years to break it.
小题1:Scientists have found that   your password is much safer for  
your account.
A.upper-casingB.lower-casing
C.reducingD.copying
小题2:According to the passage,______is not one of the most used
passwords.
A.123456B.abcdefC.abc123D.000000
小题3:It takes a hacker___to hack a six-letter password which is in
lower—case.
A.10 minutesB.10 hours
C.18 daysD.44,530 years
小题4:The Chinese meaning of the underlined word is       
A.数字     B.符号      C.色彩       调料
小题5:What is the main idea of the passage?
A.What passwords are.
B.How a password is hacked.
C.How to make your password much safer.
D.Why hackers hack your password.

小题1:A
小题2:D
小题3:A
小题4:B
小题5:C

小题1:细节理解题,根据文中语句“Scientists have found that upper-casing(大写)your password can help you reduce the chance being hacked.”理解可知。
小题2:细节理解题,根据文中语句“However,50 percent of people choose a common word or simple key combination for their password.The most used passwords are 123456, abcdef and abc123.”理解可知。
小题3:细节理解题,根据文中语句“but if you make the letter in upper-case,it can take up to ten hours.”理解可知。
小题4:词义理解题,根据文中语句“Of course, you can also add numbers or symbols to your password. Most of the time a hacker’s computer has to work for 18 days to break a password, but if you choose a nine-letter password that includes numbers and symbols, it can take a hacher’s  computer 44,530 years to break it.
”理解可知。
小题5:理解归纳题,根据文中语句理解可知。
练习册系列答案
相关题目
A survey was made about what to do if there was a fire. These are some of the replies.
First name: Emily         State or province: Illinois          Country: USA
Stay low, close to the ground and make your way outside. Then call the local emergency(急救)number from your neighbor’s house. This is the most important thing to do. Then wait for the firefighters(消防队员).
 
First name: Vanessa       State or province: Texas           Country: USA
If there was a fire and I was in the shower, the first thing I would do would be to make all my clothes really wet and put them on. Then I would break the window with something and get out. If I couldn’t do that, I would lie down and leave the water running.
 
First name: Kystina       State or province: Illinois           Country: USA
I’ve never actually been in a fire, but I know what to do. Sometimes at school we have fire drills so that we know what to do if there is a real fire.
 
First name: Henry        State or province: Alaska           Country: USA
I would do what they did in the Great Fire, even though it did not happen in the real life. It was a very exciting story.
小题1:Emily thinks that _____ is the most important thing to do if there is a fire.
A.staying low
B.calling the emergency number
C.waiting for the firefighters
D.making the clothes wet
小题2:_______ come from the same state.
A.Vanessa and HenryB.Emily and Kystina
C.Emily and HenryD.Kystina and Henry
小题3:Kystina would know what to do because ______.
A.she was once in a real fire
B.she has read a story about a fire
C.she knew the emergency number
D.she sometimes has fire drills at school
小题4:The Great Fire was ______.
A.not a real fire
B.the biggest fire in history
C.a story that made people happy
D.a story that really happened
小题5:Which of the following things is NOT mentioned in the passage if there is a fire?
A.Making the clothes wet.
B.Waiting for the firefighters.
C.Putting out the fire by yourself.
D.Breaking the window and getting out.
根据短文内容,选择正确答案,并将其字母代号填入相应空格内。
People can use the phone to talk with others almost anywhere on the earth. But when you use the phone, you don’t see the person you are talking with.
Today some people are using a kind of telephone called the picture phone or vision phone. With it , two people who are talking can see each other.
Picture phones can be useful when you have something to show the person you’re calling. They may have other uses in the future. One day you may be able to ring up a library and ask to see a book. Then you’ll be able to read the book right over your picture phone. Or you may be able to go shopping through your picture phone. If you see something in the newspaper that you think you want to buy, you’ll go to the phone and call the shop. People at the shop will show you the thing you’re interested in right over the phone. You’ll be able to shop all over the town and never even leave your room!
小题1:Today people can use the phone to talk with others ________ .
A.in all the towns
B.in some places in the world
C.only in big cities
D.almost anywhere on the earth
小题2:The underlined word “it” in the text means “_______ ”.
A.the picture phone
B.any phone
C.the use
D.the change
小题3:We can _____ through the picture phone according to the text.
A.write a bookB.do some shopping
C.play gamesD.have classes
小题4:Picture phones are very_______.
A.usefulB.impossible
C.badD.badly
小题5:Which is NOT true according to the passage?.
A.Today some people are using a kind of telephone called the picture phone or vision phone.
B.With the picture phone, two people can’t see each other.
C.With the picture phones, you can show something to the person you’re calling
D.Today people can use the phone to talk with others almost anywhere on the earth
When I was eleven years old, God gave me a gift of happiness. One day, on my way home from school, a truck ran over me and cut off my      1   . As I lay there bleeding, I realized that I might have to live the rest of my life     2    legs. How depressing(令人沮丧的)!      3     then I realized that depression won’t get my legs back. So I decided not to      4    my life feeling depressed. When my parents arrived at the     5  , they were shocked and sad. I told them, “I’ve already    6     the fact. Now you also have to get used to this.”
Ever since then, I often see my friends getting     7     about little things: their bus comes late; they get a bad grade on a test. But I just   8    life.
I was lucky to realize that it is a waste of energy to focus on what you have     9   , and that the key to happiness is to take pleasure in what you have. Sounds simple, doesn’t it? So      10 are many people unhappy?
People often think happiness is based on what you     11  . “My whole life would improve if I had a new car.” But when you get the    12    and what happens? For a whole week you are walking on air. Then you go right back to being     13   .
Happiness is not a happening; it’s a state of     14  . You can have whatever there is in the world  and  still  be  uncomfortable.  Or  you  can  have  relatively     15   and  feel  full  of  joy. Happiness comes from mastering the art of appreciating and consciously taking pleasure in what you already have.
小题1:
A.armsB.legsC.feetD.fingers
小题2:
A.withoutB.byC.onD.with
小题3:
A.SoB.OrC.ButD.Once
小题4:
A.spareB.devoteC.influenceD.waste
小题5:
A.hotelB.hospitalC.stationD.school
小题6:
A.believedB.acceptedC.refusedD.received
小题7:
A.worriedB.guiltyC.excitedD.curious
小题8:
A.hateB.enjoyC.saveD.dislike
小题9:
A.struggledB.supportedC.lostD.completed
小题10:
A.howB.whyC.whenD.whether
小题11:
A.achieveB.promiseC.donateD.admire
小题12:
A.carB.lifeC.jobD.grade
小题13:
A.wiseB.sillyC.friendlyD.unhappy
小题14:
A.painB.appearanceC.angerD.mind
小题15:
A.muchB.manyC.littleD.all
Kelly Christopher, a student at Lutheran High School in California, US, loves oranges. One day last week, she used a pole(竿子) to pick oranges off trees and collect them in baskets. It's the first time in her 15 years she's picked fruit from trees.
"This is quite different from buying oranges in the supermarket," said Christopher. "Every time I eat an orange, I'll remember this experience."
Christopher was one of the 30 student volunteers at Soil Born Farms. She volunteered as part of a project which was set up in 2009 to help homeowners in South Land Park pick oranges and other fruits out of their backyards. Before, the fruit would rot on the ground or get eaten by animals. Now the fruit is donated to those who need it.
"It is good for many people", said Randy Stannard, who works for the project. "The homeowner gets fruit picked and more people can have healthy food."
"Two harvests (收成 ) were organized in 2009 and volunteers picked 3,000 pounds (1,360kg) of fruit", Stannard said. In 2010, the number was 20,000. This year, Soil Born Farms hopes to get 40,000 pounds. They will harvest every weekend from January to April.
Shannon Galloway, Christopher's science teacher, brought her students into the project this year.
"You're making use of a resource that might be wasted," she said. "I think it's meaningful to everyone."
Donato Frazier, 15, always climbs up a ladder(梯子) and gets on the top of the tree.
"Standing on the treetop is pretty cool," Frazier said. "I can see clearly that many baskets are filled up, and even see that many people are eating healthy fruit because of our volunteer work."                                          
小题1:Christopher and other students went to pick fruits from real trees because they wanted to _____.
A.have some fresh fruit for themselves
B.make some money by selling fruit
C.provide people with more healthy fruit
D.buy some cheap fruit from their neighbors
小题2:When was the project set up?
A.In 2008. B.In 2009.C.In 2010. D.In 2011.
小题3:What will happen to the fruit if they don’t help the homeowners pick it?
A.The fruit will rot or be eaten by small animals.
B.People who need the fruit will come to pick it.
C.The fruit will be used as a resource for research.
D.Homeowners will pick the fruit and sell it.
小题4:What does the underlined word resource mean?
A.资源B.调查C.对策D.娱乐
小题5:How do the students feel about their work?
A.It’s interesting and easy.
B.It’s meaningless and hard.
C.It’s meaningful and exciting.
D.It’s tiring and boring.

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网