摘要： A. numbers B. hours C. minutes D. time

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      For one week in April, millions of people chose not to watch TV for “TV Turnoff Week”. TV Turnoff
Week started in 1995 and is more popular every year. Many people discover that you can have a good time
with the TV off. If that sounds crazy to you, just have a look at some numbers:
     ―An American teenager spends 900 hours every year at school; the same teenager spends 1,023 hours
every year watching TV. That's 2 hours 49 minutes every day.
     ―An average (平均) British person (not just teenagers) watches 3 hours 35 minutes every day.
     ―In the US, most TV has adverts. American children see 20,000 adverts every year. By age 65, an
American has seen two million ads!
     But some research from Britain says that may not be a problem. The London Business School watched
people carefully during TV adverts and they discovered that people don't watch a lot of the ads. The
researchers discovered that the most common activity during the adverts was talking to other people in the
room. Many other people started reading or doing housework or changed channels during adverts. They
only really watched them about 25 percent of the time.

1. During TV Turnoff Week, many people don't _____.

A. watch TV
B. change channels
C. watch adverts
D. do their school work

2. From the passage we can learn that _____.

A. American children see more adverts on TV than their parents
B. British people spend more than 3 hours a day in front of their TV
C. Researchers noticed that most people changed channels during ads
D. An American teenager spends more time at school than watching TV

3. The writer's purpose is _____.

A. to advise us to spend less time on TV
B. to tell us how to avoid watching adverts
C. to show us how many adverts American TV has
D. to ask us to turn off TV during TV Turnoff Week

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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.

1.Scientists have found that your password is much safer for

your account.

A．upper-casing	B．lower-casing
C．reducing	D．copying

2.According to the passage,______is not one of the most used

passwords.

A．123456

B．abcdef

C．abc123

D．000000

3.It takes a hacker___to hack a six-letter password which is in

lower—case.

A．10 minutes	B．10 hours
C．18 days	D．44,530 years

4.The Chinese meaning of the underlined word is

A.数字 B.符号 C.色彩调料

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.

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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.

1.
Scientists have found that your password is much safer for your account.
1. A.
  upper-casing
2. B.
  lower-casing
3. C.
  reducing
4. D.
  copying
2.
According to the passage,______is not one of the most used passwords.
1. A.
  123456
2. B.
  abcdef
3. C.
  abc123
4. D.
  000000
3.
It takes a hacker___to hack a six-letter password which is in lower—case.
1. A.
  10 minutes
2. B.
  10 hours
3. C.
  18 days
4. D.
  44,530 years
4.
The Chinese meaning of the underlined word is
1. A.
  数字
2. B.
  符号
3. C.
  色彩
4. D.
  调料
5.
What is the main idea of the passage?
1. A.
  What passwords are.
2. B.
  How a password is hacked.
3. C.
  How to make your password much safer.
4. D.
  Why hackers hack your password.

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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-casing	B．lower-casing
C．reducing	D．copying

小题2:According to the passage,______is not one of the most used
passwords.

小题3:It takes a hacker___to hack a six-letter password which is in
lower—case.

A．10 minutes	B．10 hours
C．18 days	D．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.

查看习题详情和答案>>

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.