某同学想获取这篇文献的原文 : Nuclear Thermal Propulsion (NTP): AProven, Growth Technology for Fast Transit Human Missions to Mars .NASA/TM-2014-218104 。如果你找到了这篇文章,那么这篇文章的第一作者是:( )
【简答题】A.Selecting excellent players. B.Stressing the importance of sports for all young people. C.Stressing human endeavors. D.Stressing the development of Olympic s.
【单选题】听力原文:A message from the United Nations secretary-general said the lives of young people are shaped by forces beyond their control. Yet today's young people also know more about the lives led by others...
【简答题】But, as Young said, the negative side of city life is becoming more apparent to more people as small incidents send out wide ripples, leading to the avoidance of certain public places.