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1992年第25届巴塞罗那奥运会闭幕歌曲《Amigos para siempre》 《永远的朋友》是1992年巴塞罗那奥运会的主题歌。 amigos para siempre在西班牙语中是一生 的朋友之意。 参与制作这首巴塞罗奥运会那奥运
by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.
[00:30.30]lesson 33 [00:48.14]1.What is the matter with Sharon? [00:53.47]She has hurt here shoulder. [00:58.93]2.what does the doctor tell her to do? [01:06.87]The doctor tells her to use a special treatment. [01:14.24]Language points: [01:19.88]1.L
从古至今,人类在不停地探索能够象鸟儿一样自由自在飞翔的方法,随着科技的进步和现代航空技术的发展,人类发明了各种飞行工具,滑翔伞就是其中一