（A）
Charles Arntzen is convinced that the reddish，powdery substance he holds in his hand will make the world a safer place． Arntzen，an Arizona State University biologist，has been working for nearly five years to create what is basically freeze-dried tomato juice—but not from any ordinary tomatoes．This fruit（yes，tomatoes are fruits，not vegetables）carries a gene from a strain of the E．coli．Some strains of E．coli can cause violent diarrhea and death．Swallowing down in reconstituted juice，however，a protein made by the E．coli gene should act as a vaccine，the new immune system to recognize and fight off the real thing．
What's the advantage？Conventional vaccines are costly to make and distribute in the impoverished Third World countries that need them most．That's why Arntzen and others began thinking about using plants instead of needles，creating vaccines that would be easy to grow locally in，say，Vietnam or Bangladesh．He focused on diarrhea，because，says Arntzen，“Diarrheal diseases kill at least 2 million people in the world every year，most of them children．”And he chose tomatoes because GREenhouse-grown tomatoes can't easily pass their altered genes to other crops and because tomato-processing equipment is relatively cheap．It would be easier still just to take whole tomatoes and eat them， but that could be a disaster，says Arntzen． Individual tomatoes come in different sizes with varying levels of protein，and uniform ity of dosage is key to an effective vaccine．“I'll always regret calling these edible vaccines，”he says，“Because that's just the image it conjuresup．”Arntzen hopes to test his tom ato juice on animals within the year，with human trials to follow．He's also thinking about vaccines forcholera，hepatitis virus and measles．And he's not alone：some four dozen labs around the world are working on their own versions of what Arntzen would prefer to call“plant-derived”vaccines，based on tomatoes， bananas and potatoes．Within a few years，some of the planet's most harm ful killers could be in retreat—and it won't hurt a bit．
1．“The real thing”in the last sentence of Para．1 means most probably __________ by the author．
A．E．coli B．tomato juice
C．the vaccine D．the gene
2．Why does the author say at the beginning of Para．2that the third world countries would need them most？
A．Because there are more patients in such countries than that in developed ones．
B．Compared with other plants，tomatoes can't easily pass their altered genes to other crops．
C．To get such tomatoes will not cost much．
D．Tomatoes are more delicious and nutritional than some other fruits．
3．According to the article，which of the following statements is true？
A．Such tomatoes have not been popularly planted，nor used in practice until now．
B．Doctor Arntzen chooses tomatoes，not other fruits like bananas as a medium，because of its easy plantation．
C．Tomatoes are easy to create vaccines against diseases．
D．Human beings need protein much，and tomatoes can meet most needs．
4．Which of the following can be a headline for this passage？
A．An Invention of a New Medicine
B．Tom ato And Diarrhea
C．A New Protein Vaccine
D．A Harmful Killer
（B）
When I heard about a giant Internet cafe at the crossroads of the world，I instantly imagined a cyber version of the old Thorn Tree Cafe in Nairobi，a few decades ago．The Thorn Tree was built around an old tree bearing a message board that every traveler passing through town sim ply had to check．And while you usually didn't have any messages，in the course of checking，you'd meet lots of new people and end up with all sorts of new travel ideas．
The EasyInternetCafe，however，is the opposite of the noisy old Thorn Tree．The big，open，two-story space feels like a hushed university library，filled with dozens of rows of long wood grain desktops．There are minimal dividers between stations：just one LCD monitor after another，with mouse and keyboard below．Surfers sit two feet apart，utterly oblivious to those around them．
Ironically，the room is decorated with posters from an online dating service—big advertising banners hang from the ceilings depicting guys and gals eyeing one another，although below no one is eyeing anything but their LCD．Soon，however，partitions will be built between stations：not for privacy but because the store was initially a magnet for pickpockets．“People sit down，”says the president of business，“and completely lose all awareness．”
Yet Internet cafe operators may soon wish they were organized，for the business is increasingly under attack．In Europe，GREece and Germany have led the way in efforts to require“gaming licenses”for Internet cafes， since it's possible to use computers for amusement and gambling．The cost of gaminglicenses would alm ost certainly make cyber cafes a losing proposition．And earlier this month，a Los Angeles councilman demanded a policeinvestigation of cyber cafes after 300 incidents of violence involving 100 teens who were linked to networked combat games，when the online battles spilled offline．
1．The Thorn Tree Cafe is the place the author experienced，where you could __________ ．
A．get some news
B．play games with others
C．surf the internet
D．have unforgettable enjoyment
2．The only reason in cafes to set up partitions is __________ ．
A．most people in the cafe focus on ceilings with posters
B．guys and gals are eyeing nothing but their LCD
C．surfers can be easy targets for pickpockets
D．privacy is concerned everywhere
3．Compared with the old cafe in Nairobi，the author tries to tell us __________ ．
A．the modern ones are attractive
B．the modern cafe is focused on the individual
C．young people don't like old ones
D．games are favors in both old and new cafes
4．The author seems to be sure that the popular cafes are not well organized．Which of the following can't be a reason for that saying？
A．Some cafes are noisy．
B．Some cafes can possibly be a place for violence．
C．Computers are sometimes used for amusement and gam bling in cafes．
D．Burglary occurs sometimes．
5．In the last paragraph，the author provides some examples to represent __________ ．
A．cafes need strict licenses and investigations
B．some governments begin to worry about the cafes and their possible problems
C．some governments are taking available methods and good control over cafes
D．it will be dangerous to operate cafes
答案：
（A）1—4 A C A C
（B）1—5 A C BA B
