单词：
单词： 相关文章
UNIT FIVE Instruction [00:03.42]Number 1 Look at the eight pictures below. [00:08.52]You will hear six people,each one explaining how to use one of these machines. [00:14.68]Write down th name of the machines in the order of the description. [00:19.7
教你怎么听
By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca
VOA常速英语2008年（四月）
Tomorrow is the first day of school. Barbara looks at her backpack. It has holes. It is dirty. She needs a new one. Her mom takes her shopping. There are so many backpacks. One backpack has yellow stars. Another one has rainbow stripes. Another one h
英语第2级听力-English Level 2
By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti
VOA常速英语2007年（十一月）
英语六级写作如何写好主题句 1关于写主题句的建议 1）要写合乎语法的句子 Example 1： Two causes of the American Civil War． 这个句子是个不完整的句子，不合乎语法，因此不能用作主题句。 Example
四六级写作指导
Explanation: The U.S. flag is often called the Stars and Stripes, because those words describe what the flag looks like. The flag has 13 stripes, which are horizontal lines (or lines that run from left to right). The stripes alternate between red and
美国精神