Since humans sent the first satellite to space in the 1950s,scientists have been studying an important topic—how to grow food in space if humans live there one day.Here are some examples.(1)Scientists study how to grow plants in space in order to D.A.improve the ecosystemB.develop new...
◆Sally Ride flew into space _5_, one was in August 1983, and the other was in October 1984.Being an◆She was the first woman to operate a robotic arm, and she used the robotic arm to retrieve a satellite as_6astronaut◆It was a pity that she missed her 7 mission into space ...
Three months later, the United States launched its own satellite. 三个月后,美国发射了它的第一颗人造卫星。 Then, in 1961, the Soviet Union sent the first person into space. 紧接着,苏联在1961年将第一位宇航员送入太空。 An American astronaut followed less than a month later. 不出一个...
And it turns out the American economy could not live without GPS either. 事实证明,美国经济也不能没有GPS。 Satellite navigation systems ensure that the clocks on Wall Street all align, that commercial fishermen know where to go and, of course, that your Lyft driver knows where to pick you u...
Just a few months later, on January 31, 1958, Americ a launched the first American satellite into space.29.But it was not long before the USSR put further pressure on the Americans with a particularly brilliant technical performance. On April 12, 1961, the cosmonaut Yuri Gagarin set out on...
根据第一段“Since humans sent the first satellite (卫星) to space in the 1950s, scientists have been studying an important topic—how to grow food in space if humans live there one day.”可知,科学家研究如何在太空种植物是为了未来在太空生活作准备,故选D。 (2)题详解: 推理判断题。根据“...
Elon Musk’s satellite businessStarlinkmay not have officially taken over Verizon’s $2.4 billion contract with the Federal Aviation Administration yet to upgrade the systems it uses to manage America’s airspace. However, on Friday,FAAofficials ordered staff to begin finding tens of millions of ...
Chinese astronaut Wang Yaping attends a news briefing the day before the launch, at the Jiuquan Satellite Launch Centre in the Gobi desert, on October 14. Stringer/AFP/Getty Images Wang is China’s second woman in space, after fellow astronaut Liu Yang. In 2012, Liu made history by joining...
Hurley told reporters that following the successful landing, the astronauts had to complete one final task-"making satellite phone calls to whoever we can get a hold of"。 The scientists said the fun attempt had a serious purpose-to ensure that future crews could use the emergency phone to ...
"可知他们进行了"科学实验和升级修复2个动力通道"。根据第三段 Hurley told reporters that following the successful landing,the astronauts had to complete one final task-"making satellite phone calls to whoever we can get a hold of'".赫尔利告诉记者,在成功着陆后,宇航员们必须完成最后一项任务--"给...