单词：Pyridine-4-Carboxaldehyde
单词：Pyridine-4-Carboxaldehyde 相关文章
Egyptian archaeologists have discovered the bottom part of an unknown pyramid in the Sakkara area about 18 miles south of Cairo. NationalGeographic explorer-in-residence Dr. Zahi Hawass, the Secretary General of the Egyptian Supreme Council for Anti
国家地理2008年
By Nico Colombant Dakar 13 November 2006 President of the Central African Republic Francois Bozize Rebels advancing in the Central African Republic say they want talks with the government, but President Francois Bozize has refused. Mr. Bozize is rec
2006年VOA标准英语（十一月)
A: I think that that car drove really well and is a good deal. B: It seems to be a good choice for you. You might want to have a mechanic take a look at it just to be sure. A: My friend is a mechanic and he came and looked at it for me this morning.
英语情景对话-买车
A: That car is exactly what I want so I probably should buy it. B: From what I see, it's a good deal. Should a mechanic check it out for you? A: A mechanic looked at it for me on Tuesday when I first looked at it. B: It's good that you took care of t
英语情景对话-买车
A: I really like that car and I am thinking of buying it. B: Yes, I agree. Do you want to take it to a mechanic to have it checked out? A: I already took care of that yesterday. B: That's good. Have you discussed the price with the seller? A: Yes, I
英语情景对话-买车
饶舌:Tech N9NE - Strange Music Box 相关介绍 ：2008年9月是Tech N9NE事业的一个里程碑，他的双CD专辑《Killer》突破100万张的销售记录。2009年4月7日，Rock The Bells 2009 Festival邀请他来做演出，今年10月的最
节奏布鲁斯