单词：whatman filter paper
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He filled the pot with water. He put the pot on the burner. He put a lid on the pot. He turned on the burner. He took a bag of coffee beans out of the cabinet. He opened the bag. He poured some beans into the grinder. He ground the beans in the grind
简单慢速英语阅读
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
2018年VOA慢速英语(一)月
AS IT IS 2015-08-28 Book Pages Could Provide Safe Drinking Water 书页可以提供安全饮用水 The expression a thirst for knowledge may soon have a new meaning for millions of people who have no way to get clean water. Researchers have developed
2015年VOA慢速英语(八)月
Ancient Papyrus Reed Could Hold Key to Water Conservation Ancient Egyptians turned papyrus into paper and provided the world with it for thousands of years. Hundreds of thousands of books in the Royal Library in Alexandria and Rome's 58 public librar
VOA标准英语2014年(七月)
He didn't know how many dozens of tiny sidling steps he had taken, his chest, belly, and face pressed to the wall; but he knew the slender hold he was keeping on his mind and body was going to break. He had a sudden mental picture of his apartment on
英文短篇小说
At the little living-room desk Tom Benecke rolled two sheets of flimsy and a heavier top sheet, carbon paper sandwiched between them, into his portable. Interoffice Memo, the top sheet was headed, and he typed tomorrow's date just below this; then he
英文短篇小说