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分集介绍:导数,斜率,速度与变化率 Derivatives.slope.velocity.rate.of.change
1. Police are interviewing two people in Atlanta after an apparent murder-suicide left four people dead. Authorities say a gunman shot five people, killing three before turning the gun on himself. Neighbors described the suspected shooter as sweet. 2
[全屏观看] 点击右键- 另存为 可保存这个Flash影片 Silly Sausage是Nitrome于2011年5月28日发行的一款益智类游戏,它是以香肠在尽量不碰到其它损失生命物体的情况下吃光所有的钻石再到达终点为标
The Japanese economy continues to be rocked by the global recession. Last month exports plunged and the nation's trade deficit hit a record high. Japan's government says exports dropped by nearly 46 percent in January compared with the same period l
HEALTH REPORT - New Heart Drug Shows Promise in African Americans By Cynthia Kirk Broadcast: Wednesday, November 17, 2004 This is Bob Doughty with the VOA Special English Health Report. Heart failure
Today we go on a journey. It starts in Sweden over 100 years ago; and then moves to London; and finally moves to future worlds and other planets. But we start in Sweden. Alfred Nobel spent his life finding ways to blow things up. He was born in 1833