知识问答
最佳答案：英语：Since the laser is the 20th century,following the atomic energy,computers,sem
最佳答案：Content:Since the laser is the 20th century,following the atomic energy,computer
最佳答案：When I saw the words which are starry star、sea of clouds、sunrise I was excited.I
最佳答案：Mobile phones are not people nearby of voice communications tools,it has become
最佳答案：Today,the Internet has undeniably become after newspapers,magazines,radio and te
最佳答案：This manager carried out this plan without any hesitations.He had learned a lot
