题目内容

12．      your timely help，otherwise，we wouldn't have finished the work ahead of time．（　　）
A．BecauseB．ForC．Thanks toD．Thanks of

分析 多亏了你及时的帮忙，否则我们不可能提前完成工作．

解答 答案：C  because 因为；for 因为； thanks to 幸亏、多亏；thanks of 谢谢．选项A和B都意为"因为"，后面均跟从句，引导原因状语从句，而句中your timely help为名词，因此排除该2项．C选项和D选项均可以表达感谢之意，但根据后半句的虚拟语气的使用，可排除D，D选项是客观的对他人进行感谢，而C选项此处可引导特殊虚拟语气，符合句意，故选C．

点评 本题考查介词短语的语义辨析，考生在平时的学习中应注意积累相应的短语和词汇，并牢记其意思．在做题时，将短语的意思和题干相结合，从语法、句子结构尤其是句意上去判断，句意通顺，符合逻辑，即正确答案．

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      Automated essay grading was first proposed in the 1960s，but computers back then were  not up to the task．In the late 1990s，as technology improved，several textbook and testing  companies jumped into the field．Today，computers are used to grade essays on South Dakota's  student writing assessments and a handful of other exams，including the TOEFL test of English fluency，taken by foreign students．
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     Take，for instance，the  Intelligent  Essay  Assessor，a  web-based  tool  marketed  by  Pearson Education，Inc．Within seconds it can analyze an essay for spelling，grammar，organization，and help students to make revisions．The program scans for key words and analyzes semantic  （语义 的） patterns，and Pearson claims that it can understand the meaning of text much the same as a human reader．

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A．robot-readers B．education reform in America
C．Hewlett contest                         
D．William and Flora Hewlett Foundation
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A．Give
B．Organize
C．Analyze
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C．people refused automated essay grading
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49．What does Paragraph 4 focus on？B
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B．The advantages of automated essay scoring．
C．The application of automated essay scoring．
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B．underline the mistakes in red ink
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D．correct key words and patterns．
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