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最佳答案：Content:Since the laser is the 20th century,following the atomic energy,computer
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最佳答案：英语：Since the laser is the 20th century,following the atomic energy,computers,sem
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最佳答案：Today,the Internet has undeniably become after newspapers,magazines,radio and te
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最佳答案：When I saw the words which are starry star、sea of clouds、sunrise I was excited.I