亚砷酸滴定法

UNIT 8 Text A PRE-READING TASK Exercise 1 Before reading the passage, try to answer the questions. 1. How many years do you think it takes to double the world population now? 2. What might be the poss

发表于:2018-12-04 / 阅读(259) / 评论(0) 分类 实用英语综合教程

Captain Benito Cereno hurried aboard his ship. It was ready to sail. A bright sun and a soft breeze promised good weather ahead. The ship's anchor was raised. And the San Dominick -- old but still seaworthy - moved slowly out of the harbor of Valpara

发表于:2018-12-08 / 阅读(794) / 评论(0) 分类 2017年VOA慢速英语(十一)月

By Katy Migiro Nairobi 18 June 2007 The president of the International Criminal Tribunal for Rwanda is briefing the U.N. Security Council on the court's efforts to prosecute the 90 people indicted for masterminding the Rwandan genocide. Katy Migiro r

发表于:2018-12-12 / 阅读(130) / 评论(0) 分类 2007年VOA标准英语(六月)

We present the second of three parts of the short story Benito Cereno. It was written by Herman Melville. Last week, we told how African slaves on a Spanish ship rebelled in seventeen ninety-nine. They killed most of the Spanish sailors. Only the cap

发表于:2019-01-02 / 阅读(353) / 评论(0) 分类 2017年VOA慢速英语(十二)月

We present the last of three parts of the short story Benito Cereno. It was written by Herman Melville. As we told you in earlier parts of our story, rebel slaves seized the ship San Dominick off the coast of Chile. They killed many of its officers a

发表于:2019-01-03 / 阅读(720) / 评论(0) 分类 2017年VOA慢速英语(十二)月

We present the first of three parts of the short story Benito Cereno. It was written by Herman Melville. Here is Shep O'Neal with the story. Captain Benito Cereno hurried aboard his ship. It was ready to sail. A bright sun and a soft breeze promised

发表于:2019-01-03 / 阅读(112) / 评论(0) 分类 2018年VOA慢速英语(九)月

We present the last of three parts of the short story Benito Cereno. It was written by Herman Melville. As we told you in earlier parts of our story, rebel slaves seized the ship San Dominick off the coast of Chile. They killed many of its officers a

发表于:2019-01-03 / 阅读(112) / 评论(0) 分类 2018年VOA慢速英语(十)月

We present the second of three parts of the short story Benito Cereno. It was written by Herman Melville. Last week, we told how African slaves on a Spanish ship rebelled in seventeen ninety-nine. They killed most of the Spanish sailors. Only the cap

发表于:2019-01-03 / 阅读(142) / 评论(0) 分类 2018年VOA慢速英语(十)月

1、报实价 This is to confirm uour telex of 6 April1997,asking us to make you firm offers for rice and soybeans Cf singapore.We telexed you this morning offering you 300 metric tons of一步polished rice at A$2,400 per metric ton ,cf singapore,for

发表于:2019-01-08 / 阅读(81) / 评论(0) 分类 天天商务口语

By Benjamin Sand Irbil, Iraq 17 October 2006 Saddam Hussein adjusts his headphones as he listens to witness testimony during his trial in Baghdad's heavily fortified Green Zone, October 17, 2006 The genocide trial of former Iraqi leader Saddam Husse

发表于:2019-01-09 / 阅读(129) / 评论(0) 分类 2006年VOA标准英语(十月)

By Brian Padden Irbil, Iraq 11 September 2006 watch Iraq Genocide report Kurdish leaders in Iraq say they want to be sure prosecutors build the strongest case possible against Saddam Hussein and six of his military commanders. They are charged with

发表于:2019-01-11 / 阅读(160) / 评论(0) 分类 2006年VOA标准英语(九月)

By Barry Newhouse Irbil, Iraq 24 February 2007 Iraqi police say a truck bomb killed 37 people and wounded more than 60 outside a Sunni mosque Satuday in restive Anbar province. Three bomb blasts in Baghdad killed at least five people and wounded 20

发表于:2019-01-12 / 阅读(152) / 评论(0) 分类 2007年VOA标准英语(二月)

(a.) Dear Mr. Jones: We thank you for your letter dated April 8 inquiring about our leather handbags. As requested, we take pleasure in offering you, subject to our final confirmation, 300 dozen deerskin handbags style No.MS190 at $124.00 per dozen C

发表于:2019-01-21 / 阅读(129) / 评论(0) 分类 天天商务口语

Science and technology 科学技术 Animal behaviour 动物行为 Drip-feeding 滴定进食 Ecology raids the techniques of chemistry 生态学里应用上了化学技术。 Time to change restaurant 该换家馆子了。 BIOLOGISTS are sometimes acc

发表于:2019-01-26 / 阅读(116) / 评论(0) 分类 经济学人科技系列

Science and Technology Animal behaviour Drip-feeding 科技 动物行为 滴定进食 Ecology raids the techniques of chemistry 生态学里应用上了化学技术。 BIOLOGISTS are sometimes accused of physics envyand there is truth in this accusat

发表于:2019-01-26 / 阅读(112) / 评论(0) 分类 经济学人科技系列

Science and Technology Animal behaviour Drip-feeding 科技 动物行为 滴定进食 Ecology raids the techniques of chemistry 生态学里应用上了化学技术。 BIOLOGISTS are sometimes accused of physics envyand there is truth in this accusat

发表于:2019-01-26 / 阅读(112) / 评论(0) 分类 经济学人科技系列

Delicacy was the key word. Not a whisper of disturbance could be allowed into the room containing the apparatus, so Cavendish took up a position in an adjoining room and made his observations with a telescope aimed through a peephole. The work was in

发表于:2019-01-29 / 阅读(90) / 评论(0) 分类 万物简史

Broadcast: May 6, 2003 By Mario Ritter This is the VOA Special English Agriculture Report. Nuts that grow on trees are an important part of the diet in many cultures. They also provide an important ex

发表于:2019-01-30 / 阅读(211) / 评论(0) 分类 VOA2003(上)-社会广角

By Benjamin Sand Irbil, Iraq 07 November 2006 Saddam Hussein called for Iraqis to forgive each other when he returned to court for a genocide trial two days after another panel of judges had condemned him to death for crimes against humanity. He sti

发表于:2019-02-02 / 阅读(141) / 评论(0) 分类 2006年VOA标准英语(十一月)

By Suzanne Chislett London 08 August 2007 Tribal villagers from the eastern state of Orissa in India claim the planned expansion of a mine and mineral refinery in their region threatens their way of life. So they sent representatives to London to as

发表于:2019-02-06 / 阅读(148) / 评论(0) 分类 2007年VOA标准英语(八月)
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