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英语翻译
The Washington Times,in celebration of the Hubble Space Telescope’s second anniversary of exploring the universe,wrote:“NASA scientists say their space telescopes are making a wealth of new astronomical discoveries.These include a black hole at the center of a nearby galaxy and the discovery of what some scientists are calling an entirely new type of quasar.” Everyone has heard the jokes about the “near-sighted” Hubble Space Telescope (HST),but the HST has made a number of outstanding observations,and I am very excited to be working on this project.
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在庆祝哈勃太空望远镜探索宇宙两周年之际,华盛顿时报写到:“国家航空暨太空总署(NASA的全称)的科学家们说,在新的太空探索上,他们的太空望远镜功不可没.这其中包括探测到一个附近星系中心上的黑洞,以及发现被一些...
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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