5.In the last paragraph, the writer implies that there is a long way to go     .

A.for a robotic vehicle to finish a 142-mile race without any difficulties

B.for a little child who has just learned to walk to reach the cookie on the table

C.for a robotic vehicle to deal with a simple problem that a little child can solve

D.for a little child to understand the importance of wiping apple juice off its face

5

Pet owners are being encouraged to take their animals to work , a move scientists say can be good for productivity , workplace morale (士气), and the well-being of animals .

A study found that 25% of Australian women would like to keep an office pet . Sue Chaseling of Petcare Information Service said the practice of keeping office pets was good both for the people and the pets . “On the pets’ side , they are not left on their own and won’t feel lonely and unhappy,” she said . A study of major US companies showed that 73% found office pets beneficial (有益的) , while 27% experienced a drop in absenteeism (缺勤).

Xarni Riggs has two cats walking around her Global Hair Salon in Paddington . “My customers love them. They are their favorites ,” she said . “They are not troublesome . They know when to go and have a sleep in the sun .”

Little black BJ has spent nearly all his two years “working” at Punch Gallery in Balmain . Owner Iain Powell said he had had cats at the gallery for 15 years . “BJ often lies in the shop window and people walking past tap on the glass ,” he said .

Ms Chaseling said cats were popular in service industries because they enabled a point of conversation . But she said owners had to make sure both their co-workers and the cats were comfortable .

4.It can be inferred from the text that the Canadian government supports ______.

A. the protection of different cultures  

B. the plan of an open-air market

C. the request of merchants    

D. the attitude of shoppers

4

Thirteen vehicles lined up last March to race across the Mojave Desert, seeking a million in prize money. To win, they had to finish the 142-mile race in less than 10 hours. Teams and watchers knew there might be no winner at all, because these vehicles were missing a key part -drivers.

DARPA, the Defense Advanced Research Projects Agency, organized the race as part of a push to develop robotic vehicles for future battlefields. But the Grand Challenge, as it was called, just proved how difficult it is to get a car to speed across an unfamiliar desert without human guidance. One had its brake lock up in the starting area. Another began by throwing itself onto a wall. Another got tied up by bushes near the road after 1.9 miles.

One turned upside down. One took off in entirely the wrong direction and had to be disabled by remote (远距离的) control. One went a little more than a mile and rushed into a fence; another managed to go for six miles but stuck on a rock. The “winner,” if there was any, reached 7.8 miles before it ran into a long, narrow hole, and the front wheels caught on fire.

“You get a lot of respect for natural abilities of the living things,” says Reinhold Behringer, who helped design two of the car-size vehicles for a company called Sci-Autonics. “Even ants (蚂蚁) can do all these tasks effortlessly . It’s very hard for us to put these abilities into our machines.”

The robotic vehicles, though with necessary modern equipment such as advanced computers and GPS guidance, had trouble figuring out fast enough the blocks ahead that a two-year-old human recognizes immediately, Sure, that very young child, who has just only learned to walk, may not think to wipe apple juice off her face, but she already knows that when there’s a cookie in the kitchen she has to climb up the table, and that when she gets to the cookie it will taste good. She is more advanced, even months old, than any machine humans have designed.

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