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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

发表于:2018-12-05 / 阅读(105) / 评论(0) 分类 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

发表于:2018-12-24 / 阅读(51) / 评论(0) 分类 Scientific American(八)月

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

发表于:2019-01-03 / 阅读(120) / 评论(0) 分类 四六级词汇与结构练习

A: Hi, I am your waitress, Mary. B: Hello, Mary. We are all pretty hungry tonight! A: While you are looking over the menu, can I interest you in an appetizer? B: An appetizer sounds good. Do you have a special menu? A: They are listed on the first pa

发表于:2019-01-11 / 阅读(48) / 评论(0) 分类 英语情景对话-餐厅

A: My name is Mary, and I will be your waitress tonight. B: Thank you, Mary. We have been looking forward to trying out this restaurant. A: Before your main course, would you like to order an appetizer? B: Sure, that sounds great. Where are your appe

发表于:2019-01-11 / 阅读(40) / 评论(0) 分类 英语情景对话-餐厅

A: My name is Mary, and I will be your server this evening. B: Hi Mary. We are really looking forward to a great meal here. A: Can I interest you in an appetizer to start out? B: I would love an appetizer. Are they listed in the menu? A: We have our

发表于:2019-01-11 / 阅读(39) / 评论(0) 分类 英语情景对话-餐厅