单词：restriction fragment
单词：restriction fragment 相关文章
No statues, no obelisks, no temples, nothing to suggest this could once have been home to the ancient world's great lost capital. When I came first to this area and to this site, I was shocked. Nothing was to be seen at the surface. No clue where to
遗失的法老城市
A big clue about whats behind the disappearing honeybees, also known as colony collapse disorder, or CCD: May Berenbaums team at the University of Illinois at UrbanaChampaign found that bees ribosomes were torn up. The ribosomes make the proteins tha
Scientific American(八)月
Grammar Girl here. Today's topic is sentence fragments. I often imagine that listeners are writing articles and essays and books, but I was recently reminded that some people make their living writing shorter things like headlines and ad copy, and th
英语语法 Grammar Girl
坚持不懈，直到成功。 我们每天的奋斗就像对参天大树的一次砍击，头几刀可能了无痕迹。每一击看似微不足道，然而，累积起来，巨树终会倒下。这恰
四六级词汇与结构练习
A fragment of a rainbow bright 天地晦暗，风急雨骤， Through the moist air I see, 望遥远边陲云霁天初， All dark and damp on yonder height, 一道七彩虹飞跨山颠， All bright and clear to me. 澄光尽万里恍惚如梦。 An
美国语文第五册