单词：arash programme
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SECTION 1: LISTENING TEST (30 minutes) Part A: spot Direction Directions: In this part of the test, you will hear a passage and read the same passage with blanks in it. Fill in each of the blanks with
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This is Scientific American's 60-Second Science. I'm John Matson. Got a minute? In a laboratory vault outside Paris is a small cylinder of platinumiridium alloy that serves as the standard for all mass measurements worldwide. By an 1889 international
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by Jason Marshall In the last article, we began talking about mathematical sequencesin particular, a type of sequence known as an arithmetic sequence. Today, were going to turn our attention to another type of sequence called a geometric sequence. In
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Each year, scientists work to develop a unique influenza vaccine to protect people against the strain expected in the coming flu season. Mutations in the virus mean that last year's vaccine probably won't protect against this year's flu variety. Now,
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And I can't imagine a place where I would be more likely to find the leaders of that revolution 我想象不到其它任何地方比史密斯学院更适合作为这场革命领导者的孕育之地 Than right here at Smith At the moment, our society
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