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Unit 6 Where's your pen pal from? [00:08.39]Section A [00:11.21]1a Listen and repeat these countries. [00:15.71]Canada France Japan [00:22.59]the United States [00:25.21]Australia Singapore [00:30.04]the United Kingdom [00:32.52]China [00:34.84]Langu
Mixture of Safe Chemicals May Cause Cancer 安全的化学品混合可致癌 From VOA Learning English, this is the Health Lifestyle report. Every day, people come into contact with thousands of chemicals. These chemicals are said to be harmless to h
Coffee is one of the world's most widely-enjoyed beverages. Flavor aside, scientists have recognized it as a complex blend of chemical compounds with potential health effects, both good and bad. Now, new research suggests that if you drink enough cof
White House press secretary Jay Carney says while the US has no interest in delaying tactics in terms of proposals for Syria to place its chemical weapons stockpile under international control. He's also aware putting together such a plan will take s
第一部分 常用于引言段的句型的2类表达方式 一、议论文常用句型 1. It is a fact that. 2. It is well-known that. 3. There is no doubt that. 4. I think that. 5. Contrary to the popular thought, I prefer. 6. Some people say/belie