题目内容
15. An awful crash between an express train and a bus _____ , however, occur the other day in Russia.
A. does B. did D. has to D. had to
B
解析
Technology: Taking the good without the bad?
Very soon, unimaginably powerful technologies will remake our lives．This could have dangerous consequences, especially because we may not even understand the basic science underlyi ng them．There’s a growing gap between our technological capability and our basic scientific understanding．We can do very clever things with the technology of the future without necessarily understanding some of the science underneath, and that is very dangerous．
The technologies that are particularly dangerous over the next hundred years are nanotechnology （纳米技术）, artificial intelligence and biotechnology．The benefits that they will bring are beyond doubt．But they are going to be very, very dangerous．I’m working in the field of artificial intelligence．I have a model design for something that might be 50,000 million times smarter than the human brain．Target date is 2010．The only thing that's not possible in the film Terminator（终结者） is that the people win．If you're fighting against technology w hich is 50,000 million times smarter than you, you probably will not win．
Nanotechnology．We've all heard of the grey glue problem, that self-replicating nanotech devices might keep on copying until the world has become sticky glue．And certainly in biotechnology, we've really got a big problem because it's converging with nanotechnology and IT．Once you start mixing nanotech with organisms and you start feeding nanotech-enabled bacteria, we can really go an awful lot further than the Borg in Star Trek（星际迷航）．And those superhuman organisms might not like us very much．
Eventually these technologies will become routine．That’s a threat to humanity．I don’t think it’s possible to slow it down．So what we need to do is accelerate the scientific research and try to get some extra tools．The problems facing us in the future are getting bigger and bigger．I think if we don’t get some proper science done, the future is hopeless indeed．
【小题1】From the text, we know that the author’s greatest concern is ．
| A．our lack of technological understanding of the process involved |
| B．our lack of technological capability |
| C．creating technology without really understanding the basic science |
| D．Our refusal to face the consequences of the technology we create |
| A．thinks people overvalue the capabilities of technology |
| B．is not optimistic that artificial intelligence will always be used positively |
| C．thinks that we should take science fiction movies more seriously |
| D．believes artificial intelligence is the greatest threat we face technologically |
| A．Because the power of the technology is exaggerated（夸大）． |
| B．Because the strength of the machines is much greater． |
| C．Because machines with that much intelligence can easily defeat humans． |
| D．Because human beings are not courageous enough to win the battle． |
When Paul was a boy growing up in Utah, he happened to live near a copper smelter（炼铜厂），and the chemicals that poured out had made a wasteland out of what used to be a beautiful forest．One day a young visitor looked at this wasteland and called it an awful area．Paul knocked him down．From then on, something happened inside him.
Years later Paul was back in the area, and he went to the smelter office．He asked if they had any plans or if they would let him try to bring the trees back．The answer from that big industry was “No”.
Paul then went to college to study the science of plants．Unfortunately, his teachers said there weren’t any birds or squirrels to spread the seeds．It would be a waste of his life to try to do it．Everyone knew that, he was told．Even if he was knowledgeable as he had expected, he wouldn’t get his idea accepted．
Paul later got married and had some kids．But his dream would not die．And then one night he did what he could with what he had．As Samuel Johnson wrote, “It is common to overlook what is near by keeping the eye fixed on something remote．Attainable good is often ignored by minds busied in wide ranges.” Under the cover of darkness, he went secretly into the wasteland and started planting.
And every week, he made his secret journey into the wasteland and planted trees and grass．For fifteen years he did this against the plain common sense．Slowly rabbits appeared．Later, as there was legal pressure to clean up the environment, the company actually hired Paul to do what he was already doing.
Now the place is fourteen thousand acres of trees and grass and bushes, and Paul has received almost every environmental award Utah has．It took him until his hair turned white, but he managed to keep that impossible vow he made to himself as a child.
【小题1】When Paul was a boy，______________.
| A．he had decided never to leave his hometown |
| B．the economy of Utah depended wholly on the copper smelter |
| C．no laws were made to protect the environment against pollution |
| D．he had determined to stop the copper smelter polluting the area |
| A．Because he wanted to find out the best way to save the area himself. |
| B．Because he was interested in planting trees since he was young. |
| C．Because he wanted to get more knowledgeable people to help him. |
| D．Because he thought his knowledge would make his advice more persuasive. |
| A．That it was impossible for trees to grow on the wasteland. |
| B．That his normal work and life would be greatly affected. |
| C．That no one would like to join him in the efforts. |
| D．That he had to keep everything he did secret. |
| A．they realized the importance of environmental protection |
| B．What Paul was doing moved them |
| C．Paul persuaded them to help him |
| D．they had legal pressure |
| A．action speaks louder than words |
| B．perseverance（持之以恒）will work wonders |
| C．God helps those who help themselves |
| D．many hands make light work |