填空题 IV. Fill in one word for each blank from a list of choices given in the box following the passage. men explorer internationally avoid walked remained majority announcement minority keep neighbour women planet buy partially Space: How Far Have We Gone Space flight is now a venerable(令人尊重的) industry. Humanity's first space _______, Soviet cosmonaut Yuri Gagarin, orbited around the globe on 12 April 1961, more than half a century ago, when Britain _______a colonial power and people were still using halfpennies to _______their fish and chips. Since then, more than 550 people have blasted(爆炸) themselves into the deep black abyss(深渊), although not all agree on how far up you need to go until you hit space, so there is no _______accepted figure. Only a 10th of those have been _______, in big part due to sexist policies by NASA and Russia's Roscosmos(俄罗斯联邦航天局) space agency. The Soviet Union pulled ahead with the first space walks, but US president John. F. Kennedy's _______that America would put a man on the moon by the end of the 1960s focused the space race squarely(直接地) on that goal. Apollo 11 touched down on our dusty grey _______on 20 July 1969. A total of 12 men _______on the moon over the next few years, all Americans, but no one has been back there since 1972. In fact, no one has left the outskirts(边缘地带) of the Earth since then. We imagine astronauts floating in free space or bouncing in moon craters(环形山), yet the _______of those lucky enough have instead spun around in low Earth's orbit - between 99 and a few hundred miles high. That's where the vast array of(大量) communications and navigation satellites live, speeding at thousands of miles an hour to _______plummeting(坠落) back to earth