隨著天氣的變暖,五月同等學力申碩考試剩下不到倆個月了,相信很多考生都在緊鑼密布的復習著。而很多在職人員都想通過申碩來提高自己的知識水平,還有就是能夠去自己理想的院校上學。以下是為大家精選的英語閱讀理解的模擬題:
Astronaut Jim Voss has enjoyed many memorable moments in his career, including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound(為地球引力所束縛的) experience in the summer of 1980 when he participated in the NASAASEE Summer Faculty Fellowship Program. Voss, then a science teacher at West Point, was assigned to the Marshall Space Flight Center's propulsion lab in Alabama to analyze why a hydraulic fuel pump seal on the space shuttle was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program. Yet it was important to NASA because any crack in the seal could have led to destructive results for the astronauts who relied on them.
“I worked a bit with NASA engineers,” says Voss, “but I did it mostly by analysis. I used a handheld calculator, not a computer, to do a thermodynamic(熱力 學的) analysis.” At the end of the summer, he, like the other NASAASEE fellows working at Marshall, summarized his findings in a formal presentation and detailed paper. It was a valuable moment for Voss because the ASEE program gave him added understanding of NASA, deepened his desire to fly in space, and intensified his application for astronaut status.
It was not an easy process. Voss was actually passed over when he first applied for the astronaut program in 1978. Over the next nine years he reapplied repeatedly, and was finally accepted in 1987. Since then he has participated in three space missions. The 50yearold Army officer, who lives in Houston, is now in training for a fourmonth mission as a crew member on the International Space Station starting in July 2000.
Voss says the ASEE program is wonderful for all involved. “It brings in people from the academic world and gives NASA a special property for a particular period of time. It brings some fresh eyes and fresh ideas to NASA, and establishes a link with our colleges and universities,” Voss explains. “There's an exchange of information and an exchange of perspectives that is very important.”
For the academic side, Voss says, the ASEE program also “brings institutions of higher learning more insight into new technology. We give them an opportunity to work on realworld problems and take it back to the classroom.”
1、Why was the hydraulic fuel pump seal important for the space shuttle? < |