Spam （垃圾郵件） mail is a fact of Internet life．Some of it carries bad things，but the main problem with spam is that it is unpleasant because it fills your mail box with pointless messages．
Most email programs have built-in filters （過濾器） that will discover unwanted messages and put them into a junk folder （垃圾文件夾）．You can make the filter learn what you consider to be spam or block certain senders．
Avoid letting your email address appear on websites-spammers search the Internet for email addresses．Be careful who you give your email address to，and if you need to send out several copies of an email，use blind copy instead to cover the other people's addresses．
Delete （刪除） spam emails without opening them．Signs of possible spam are bad spelling in email headers，strange sender addresses，or emails sent at unusual hours．If you do open a spam mail，never reply to it or click on any pictures it may have．
If you receive an unexpected email pretending （偽裝） to come from your bank，credit card company or other suppliers，be very careful．If the email asks you to reply，don't do it!Instead，call up these places or visit their websites．
Consider setting up a second email address and keep one address for your personal use and another for your online communication．

（1）What is the main problem with spam？

C

C

A．It's everywhere．
B．It carries bad things．
C．It's unpleasant．
D．It fills one's mail box．
（2）How many suggestions are there in the passage？

C

C

A．Three．
B．Four．
C．Five．
D．Six．
（3）What should you do if you receive a spam email？

B

B

A．Reply to it quickly．
B．Delete it at once．
C．Click its pictures．
D．Visit its website．
（4）Which of the following is the writer's idea about spam emails？

A

A

A．Be careful with them．
B．Don't be afraid of them．
C．Find interest in them．
D．Try to fight against them．

1．There are some very good inventions which，for one reason or another，don't become popular．These inventions should be better known，even though I think that some of them are crazy．Let's have a look at some of these inventions and see if you agree that they should be more successful．
The Australians had a great idea to stop people from drinking and driving．The idea was that if a driver wanted to start the car，she or he would have to blow into a bag first．If there was too much alcohol （酒精） in their breath，the car wouldn't start．It sounded like a great idea to me，but people said that they might need to drive the car in an emergency （緊急情況） even if they had drunk too much alcohol．Another idea I liked was an invention by a scientist who thought his children watched too much TV．He connected the TV to an exercise bike so that the electricity to power the TV was produced by the bike．If the children wanted to watch a lot of TV，they had to pedal （踩動(dòng)） very hard．I found another invention on the Internet which encouraged good habits．Believe it or not，this invention was an ashtray （煙灰缸） which spoke to you when you lit a cigarette!The"voice"of the ashtray was started by the heat from the cigarette and reminded you how dangerous it is to smoke．
One of the strangest inventions I have come across is a bicycle which can cross rivers!The idea was that when you came to a river，you could inflate a huge plastic ball all around the bike．You would then get into the ball which would float on the river while you pedaled the bike inside the ball!Why not use a bridge instead？A friend of mine at school once bought a strange pair of football shoes．On the bottom of the shoes there was a rotating pad of studs （轉(zhuǎn)動(dòng)釘墊）．The idea was that you would change direction more quickly if the studs rotated with you．The problem was that every time you stopped you changed direction whether you wanted to or not!I think he wore those shoes twice!One thing I would like is a baseball cap with a built-in radio so you can listen to sport all day with your hands free．While we are on the subject of sport，the Americans invented a kind of robot for sports fans．If you were watching your team on TV on your own，you could press a button and the robot would do"high fives"with you!Fantastic!I wonder if you have any good ideas for inventions like these．

（1）What's the writer's attitude towards the inventions mentioned in Paragraph 2？

A．The writer regrets he knew nothing about the inventions．
B．he writer doubts if the inventions will be popular soon．
C．The writer thinks these inventions will do good to people．
D．The writer finds these inventions are the strangest of all．
（2）What can we know from the passage？

A．The father used his invention to stop children watching too much TV．
B．It was very bad for the drivers to blow into a bag before their driving．
C．The bike crossing rivers was considered one of the best inventions．
D．The invention of new shoes would make players run much faster．
（3）The underlined word"inflate"in the third paragraph means

．
A．check out
B．blow up
C．look into
D．turn over
（4）What's the best title for the passage？

A．Popular Inventions Today
B．Technology and Invention
C．Inventions with a Difference
D．The History of Invention．