单词:insoluble wettable nuclei
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[00:00.00]在线英语听力室( www.tingroom.com )友情制作 [00:03.81]1999 Passage4 [00:07.51]When a Scottish research team startled the world [00:10.54]by revealing 3 months ago [00:12.61]that it had cloned an adult sheep, [00:14.94]President Clinton move
Science and Technolgy. 科技。 Modern alchemy. 现代炼金术。 Turning a line. 进入新的一行。 The race to extend the periodic table continues. 扩展元素周期表的比赛仍在继续。 ONE of the first inklings that chemistry has an u
This is Scientific American's 60-Second Science. I'm Steve Mirsky, got a minute? Neandertals were our closest relatives. And now we know a lot more about them. Because researchers have for the first time sequenced a complete Neandertal genomethat of
bend,v 使弯曲=crook 【例】The road bends here 路在这里转弯。 【类】bend:rigid=submerge:buoyant=dissolve:insoluble刚性的不会弯曲=有浮力的不会沉没=不能溶解的不会溶解
Four new elements have been added to the periodic table, finally completing the table's seventh row and rendering science textbooks around the world instantly out of date. 据悉,元素周期表将要新添四名新成员,第七行元素将得以完
Questions 12-20 The elements other than hydrogen and helium exist In such small quantities that it is accurate to say that the universe somewhat more than 25 percent helium by weight and somewhat less than 25 percent hydrogen. Astronomers have measur