[化] 溴甲苯

[ti:UNIT 2 Biggest, Longest, Widest Lesson 11 Don't Fall, Danny!] [0:00.836]UNIT 2 第二单元 [0:01.855]Biggest, Longest, Widest 最大,最长,最宽 [0:04.645]Lesson 11: 第十一课: [0:06.280]Don't Fall, Danny! 丹尼,别倒下! [0:08.

发表于:2018-12-10 / 阅读(121) / 评论(0) 分类 河北教育初中英语(初中起点)九年级上

[00:02.75]Unit 19 Communication Language Awareness 4 [00:08.70]Lonesome Male of the Galapagos [00:11.60]Jo Tuckman on the Galapagos Islands [00:14.83]Celebrity is not usually a characteristic [00:17.49]associated with middle-aged giant tortoises [00:

发表于:2018-12-13 / 阅读(82) / 评论(0) 分类 北师大版高中英语模块7(选修)

Pre-Listening Vocabulary turtle: a marine-dwelling (fresh or saltwater) hard-shelled reptile; used in some regions as a generic word for turtles, terrapins, and tortoises tortoise: a land-dwelling reptile with a dome-shaped shell streamlined: feature

发表于:2018-12-19 / 阅读(48) / 评论(0) 分类 Facts-事实

JUDY WOODRUFF:Now the challenges of combating climate change. This week, the European Union announced it was loosening its strict environmental regulations in the face of economic setbacks. In the U.S., renewable sources of energy like wind and solar

发表于:2019-01-27 / 阅读(39) / 评论(0) 分类 PBS访谈环境系列