A是常见的有机物，现有如下反应关系： 已知：①醛可以发生如下反应： ②B与乙

读下面一段短文，根据上下文意思，用括号内所给词的正确形式填空。并将答案写在文

back      enjoy      quick      online      save

    More and more people ________ 小题1:the life with computers. Using computers you can send E-mail  ________小题2:and easily．You are able to send a letter with pictures and sounds to someone，anywhere in the world without putting a stamp，E-mail can send its message to the other side of the world in seconds. E-mail is easy to use and it _______小题3: time and money. It services for twenty-four hours．So it doesn’t matter if your friends are in bed when you send E-mail to them，or you are seeing a film at the cinema when they send E-mail _______小题4:
Can you imagine the future without teachers but computers? Students will teach themselves in the schools in the future．Computers help students develop their own ways of learning. Students will follow the learning programs by looking at online libraries and watching lessons by world—class teacher. If they don’t understand something，they will ask other students ________小题5:or E-mail their teachers．Computers are becoming more and more popular indeed(真正地)．