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4601 Lesson Forty-six Country and Nationality 国家与国籍 Whats your nationality? Are you American? 你是什么国籍?你是美国籍吗? Are you Englishman? Are you Brithish? Are you French? Are you Japanese? Are you German? German 德国人 two Germans 4602 Les
This is Scientific American's 60-Second Science, I'm Christopher Intagliata. Got a minute? Life on earth requires six basic ingredientscarbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus. Those six elements are the building blocks for DNA and R
Violence on Rise in Iraq's Oil-Rich Kirkuk Area Four months ago, Tuz Khormatu, a sleepy town 80 kilometers southeast of Kirkuk, became the new frontline between Iraq's semi-autonomous Kurdish region and the central government. Political tensions over
The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor
Lesson 256 The fish is rich in oil. 1.The fish is rich in oil.这种鱼脂肪很多。 2.This area is rich in coal.这一地区蕴藏着丰富的煤矿。 3.It's rich in natural resources.这里自然资源丰富。 4.He's rich in experiences.他经历
Matches Striking matches, on this Moment of Science. Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matche