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46.Vision Human vision like that of other primates has evolved in an arboreal environment. In the dense complex world of a tropical forest, it is more important to see well that to develop an acute sense of smell. In the course of evolution members
新概念优美背诵短文50篇
Human vision like that of other primates has evolved in an arboreal environment. In the dense complex world of a tropical forest, it is more important to see well that to develop an acute sense of sme
新东方背诵文选
By Richard Krantz Washington, D.C. 28 February 2006 watch Space Program report Proposed space vehicle With little fanfare, and on a tight budget, the United States is reshaping its space program in an
2006年VOA标准英语（二月）
To much patriotic fanfare, china launched its first ever moon-shot today, the Chang'e 1 orbiter named after Chinese goddess credited with flying to the moon will spend more than a year surveying the lunar surface. It's all part of the China's long t
英伦广角
SCOTT SIMON, HOST: You would expect a trip into space would change a person - their heart, their soul, but their eyeballs? For years, a north Texas doctor has been trying to find out what causes this vision change among astronauts. Her latest researc
2017年NPR美国国家公共电台3月
By Mike O'Sullivan Los Angeles 04 September 2007 Humans could get to Mars in less than 10 years, if they put their minds to it. That is the message of the Mars Society, a group of scientists and space enthusiasts who met recently in Los Angeles. VOA'
2007年VOA标准英语（九月）