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But the HEPA filter for Olivers Vibe got dirty very quickly. And, it was not cleanableit was simply replaceable. When it turned filthy brown, Oliver went back to Target to buy a new filter. Oddly, Target sold the F15 belt for the Vibe, but not the fi
2013年3月14日 周四阅读考试战况 一旧 2008年5月31日 鹿是因为什么灭绝滴呢?气候变化?还是人类活动? 题目细碎 3个填空 3个类似日本塔那题的matching,4个简答题,还有2个选择。(整个三篇文章风格以
P1 青春期,4个TFNG,3个选择,6个matching P2 么art active,LOH,人物配理论的matching, summary P3 illness,表格类的summary比较简单,8个matching。正如老乐点题班提醒,Matching天下,TFNG继续走低。今天考
From VOA Learning English, this is the Health Lifestyle report. In parts of India, it is not uncommon to see people wearing a mask over their nose and mouth. The capital, New Delhi, has some of the world's dirtiest air. The pollution was a call for a
By Tabinda Naeem Washington, D.C. 21 May 2007 Two years ago, the National Academy of Engineering established the Grainger Challenge Prize for Sustainability. This $1 million award was designed to challenge the world's scientists to develop a practica