With the successful launch of Tiangong-l, which was _____ breakthrough in space
题型：不详难度：来源：
With the successful launch of Tiangong-l, which was _____ breakthrough in space field,China"s space dream took a step closer to _____ reality.| A．a;/ | B．the； a | C．a; the | D．the;/ |
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答案
| A |
解析
试题分析：考查冠词。可数名词单数前加a/an；表泛指，意为“一个”；the是特指，意为“那个，这个”；不可数名词前不用冠词。breakthrough突破，这里是指“天宫一号”的成功发射，是具体的一件事，前用不定冠词a；排除B、D；reality现实，不可数，排除C。故选A。 |
举一反三
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