题目内容
Rescue Platform
In the aftermath of the terrorist attacks on the World Trade Center, security experts are trying to develop new ways of rescuing people from buming skysrapers. One idea is a platform. capable of flying vertically and hovering in the air like a helicopter. The platform. would rise up and down alongside a skyscraper and pick up people trapped in high stories.
The idea for the vertical takeoff platform. was hatched more than ten years ago by a Russian aerospace engineer, David Metreveli, who has since moved to Israel. Metreveli's dedsign, called the Eagle, calls for two jet engines that turn four large horizontal propellers. The spinning of the propellers generates the necessary lift, or upward force, to raise the platform. The more power is supplied to the propellers, the higher the platform. rises. Moving the platform. sideways involves applying differing amounts of power to each propeller.
Helicopters are now used in some cases to get people out of buming buildings, Escape baskets slung from them dangle beside the building for people to climb into. Unfortunately, the baskets cannot reach every floor of a building because the ropes from which they hang become unstable beyond a certain length.
So far, Metreveli has built a small-scale model of the Eagle to test his idea. In the wake of September 11, he has been able to secure enough funding to start building a larger, 4-meter by 4-meter prototype, which he calls the Eaglet.
A rescue platform. called the Eagle is capable of moving vertically but not sideways.
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The author associates the issue of functionism with post-war modernist architecture because
The last sentence of the passage implies______.
The second paragraph tells us ______.
Stress Level Tied to Education Level
People with less education suffer fewer stressful days, according to a report in the current issue of the Journal of Health and Social Behavior.
However, the study also found that when less-educated people did suffer stress it was more severe and had a larger impact on their health.
From this, researchers have concluded that the day-to-day factors that cause stress are not random. Where you are in society determines the kinds of problems that you have each day, and how
well you will cope with them.
The research team interviewed a national sample of 1,031 adults daily for eight days about their stress level and health. People without a high school diploma reported stress on 30 percent of the study days, people with a high school degree reported stress 38 percent of the time, and people with college degrees reported stress 44 percent of the time.
"Less advantaged people are less healthy on a daily basis and are more likely to have downward tums in their health." lead researcher Dr. Joseph Grzywacz,of Wake Forest University Baptist Medical Center, said in a prepared statement. "The downward tums in health were connected with daily stressors. and the effect of daily stressors on their health is much more devastating for the less advantaged."
Grzywacz suggested follow-up research to determine why less-educated people report fewer days of stress when it is known their stress is more acute and chronic.
"If something happens every day, maybe it's not seen as a stressor" Grzywacz says. "Maybe it is just life."
stressor n.紧张刺激物
devastating adj.毁灭性的
follow-up n. (对病人的)随访
Stress level is closely related to ______.
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