单词：zinc bronze
单词：zinc bronze 相关文章
While on an expedition in western China twenty years ago, some explorers discovered the mummies of a tall, red-haired people. Though estimated to be nearly 4,000 years old, the corpses were quite well
赖世雄中级美国英语
[00:02.00]考古学 [00:04.00]Speak 1 Work with your partner and practise the following dialogue. [00:07.68]说 1 和一个伙伴一起练习下在的对话。 [00:11.36]Student A talks about a topic he or she is interested in, [00:14.25]学生A谈论他
高中英语人教版高二
Passage One 26. A. They were possibly caused by man. B. They were mostly caused by volcanoes. C. They were certainly caused by nature. D. We know nothing about their causes. 27. A. Afraid. B. Excited. C. Curious. D. Indifferent. 28. A. Copper and iro
英语四级听力-短对话
SCIENCE IN THE NEWS - From A to Zinc: The Story of Vitamins By Nancy Steinbach Broadcast: Tuesday, March 29, 2005 (MUSIC) VOICE ONE: I'm Bob Doughty with Phoebe Zimmermann, and this is the VOA Special
科技之光
Zinc supplements reduce the average cold by about a day and also make symptoms（症状） less severe, according to the latest findings. There's no cure for the common cold, but there's no shortage of ways to treat the symptoms. For a number of year
英语新闻
Lesson 37 All About A Penny 第37课 关于便士 When I was a little boy, pennies, and halfpennies, and farthings were made of pure copper. But copper is too soft a metal to stand the rubbing which coins get. So these old pennies soon became so smoo
英国学生科学读本