SSS科学60秒:20120104
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- 麻省理工学院公开课
科学60秒:泪糖代替血糖?
People with diabetes may have to endure multiple, painful finger sticks every day to get blood samples for testing. But a new glucose test may do away with the pain even as it brings on the t...
简爱 听力训练32
简爱CHAPTER SIX Life at Lowood Continues As spring came and the days grew warmer,life at Lowood no longer seemed so hard. We enjoyed walking and playing outside,under a blue sky. But the war...
简爱 听力训练18
简爱After the homework was done we each had a small piece of bread for supper. Then we all went upstairs in the long, crowded bedroom, where two children shared every bed. I had to share Miss M...
活出个性
Food for thoughtIn the eternal universe, every human being has a one-off chance to live---his existence is unique and irretrievable, for the mold with which he was made, as Rousseau said, was bro...