敬爱的读者,自从您第一次看到《中国青年科技》杂志走向这个世界以来,几近三个年头了。也就是说,我们和大家交了差不多三年的朋友。这期间,我们每天都收到许多读者的来信。有的向我们提出良好的建议;有的为我们提供多方面的科技信息;有的向我们敞开心扉诉说心语,或渴求某方面问题的咨询;更多的是不断地向我们提供大量的稿件。 《中国青年科技》是一个幸运儿, Dear reader, Almost three years have passed since you first saw the “China Youth Science and Technology” magazine going to this world. In other words, we have made friends with you for almost three years. During this period, we received letters from many readers everyday. Some of us put forward good suggestions; some provide us with many aspects of scientific and technological information; some open to us our hearts to talk about, or desire for advice on some issues; more is to continue to provide us with a large number of manuscripts . “China Youth Science and Technology” is a lucky child,