By the time the first satellite ___ launched in 1957, scientists ___ done a lot of preparatory work. A. was, had B. is, have C. had been, had D. was being, have 相关知识点: 试题来源: 解析 A。解析:第一空,“in 1957”是过去时间,卫星被发射,用一般过去时的被动语态“was launched...
Space exploration began in 1957,when the first artificial satellite was launched by the Soviet Union.Yuri Gagarin 11(1)___(become) the first person to orbit (环绕) the earth in 1961.In 1969,Neil Armstrong was the first person to walk 1 (2)___the moon.Since then,space exploration ...
Tim DeBenedictis 正在 Kickstarter 上為 SkyCube: The First Satellite Launched by You! 籌款! A nano-satellite that lets you take Earth images and "tweet" from space, then inflates a visible balloon, and de-orbits cleanly.
China launched the first two communications satellites for its space-based Internet of Things (IoT) project on a Kuaizhou-1A carrier rocket from Jiuquan Satellite Launch Center in northwest China at 9:16 a.m. on Tuesday. The two satellites, Xingyun-2 01 and 02, are the firs...
Space exploration began in 1957,when the first artificial satellite was launched by the Soviet Union.Yuri Gagarin 11(1)___ (become) the first person to orbit (环绕) the earth in 1961.In 1969,Neil Armstrong was the first person to walk 1 (2)___the moon.Since then,space exploration...
The first satellite in space, which was launched by the Soviet Union, opened a new era of exploration. The first satellite in space that was small and simple had a great impact. A. which was launched by the Soviet Union B. that was small and simple 相关知识点: 试题来源: 解析 A ...
First Indian remote-sensing satellite launched by SovietsNo Abstract available for this article.doi:10.1038/332296a0KS JAYARAMANNature Publishing Group UKNature
China launched its first satellite Dong Fang Hong I (DFH I) to earth orbit on April 24, 1970, becoming the fifth country in the world to independently launch satellite following the USSR, USA, France and Japan. The 390-lb. electronic ball floated around the earth blaring the patriotic song...
After China’s first satellite into the Earth’s orbit in 1970 came four flights of unmanned Shenzhou missions(飞行) from 1999 to 2002. The country carried out its first one-piloted space flight in October 2003 making China the third country in the world to have independent human spaceflight ...
China successfully set off its first atom bomb (原子弹) in 1964. Later, China launched a satellite on April 24, 1970, becoming the country to independently launch a the former Union of Soviet Socialist Republics, the USA, France and Japan.As a forerunner of China's aerospace science and te...