单项选择题

The Intemet as the public has known it and used it for the last decade may not be the Interact for the future. The system is getting old and rickety( 快要散架的; 摇摇晃晃的) ,particularly for the volume of commerce it has to accommodate. The prophylactic(预防性的) software that was meant to protect the web is less effective. Like anything else that is used regularly whether it is a ear, a light bulb, or a PC, the Internet is going to have to be patched and upgraded more often now. It won’t work every hour of every day anymore.
The paragraph is intended to tell the reader that

A. the Internet is working properly till now.
B. the Internet used now has many problems.
C. the Intemet has to deal with a lot of data.
D. the Internet is well protected by softwar
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单项选择题
Right now, the climate scientists feel that if all humans shut off carbon emissions today, it will still glide up by about 1 degree centigrade: In the business, as-usual scenarios, Nicholas Stem says there’s a 50 percent chance we may go to 5 degrees centigrade. We know what the Earth was like 5 or 6 degrees centigrade colder. That was called the Ice Ages. Imagine a world 5 degrees warmer. The desert lines would be dramatically changed. The West is projected to be in drought conditions. And certain tipping points might be triggered. We can adapt to 1 or 2 degrees. More than that, there is no adaptation strategy. What would happen if the temperature went five degrees up
A. We would return to the Ice Ages.
B. There would be more humid areas.
C. The climate would be ary in the West.
D. We would adapt to the new climate well.
单项选择题
Although it is made in America, BigBelly is reminiscent(使人想起) of a futuristic Japanese robot. Flashing lights indicate when it is full and needs to be emptied. Many are wireless. enabled, which effectively turns them into Twitterers—they transmit brief text messages to a centralized Web site to let owners know when compactors are full. Like many smart green products, they’re not cheap—and they’re much more expensive than the dumb product they’re hoping to dislodge. It costs about $ 80 a month to lease(长期租用) a BigBelly, or from $ 3,000 to $ 3,900 to purchase one, though those buying in bulk get a discount. How can BigBelly let his owner know that the compactor is full
A. By sending text messages to a centralized website.
B. By turning on the flash-lights connected to the compactor.
C. By sending a robot to remind the owner.
D. By sending messages through Twitterers.
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