阅读理解Alwaysforgettingyourlongpasswords(密码)?Worriedaboutbeinghacked(被攻击)?All

阅读理解 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.A.upper-casingB.lower-casingC.reducingD.copying2.According to the passage,______is not one of the most used passwords.A.123456B.abcdefC.abc123D.0000003.It takes a hacker___to hack a six-letter password which is in lower—case.A.10 minutesB.10 hoursC.18 daysD.44,530 years4.The Chinese meaning of the underlined word is
A.数字 B.符号 C.色彩D.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.

ADABC解析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。
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。
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。
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。
5.理解归纳题，根据文中语句理解可知。

这个解释是对的