单选题 Instead of researching and writing their papers, some students ______.

A、 ask other students to write their papers
B、 draw pictures instead
C、 copy from reference books
D、 copy papers or large parts of papers from the Internet

【正确答案】 D

【答案解析】解析：特定信息的找寻和判断。根据原文Some students research and write their term papers．Others，however，just copy them off the Internet and turn them in as their work可知，有些学生做研究自己写论文，但是还有些学生只是抄袭网上文章，而后当自己作业上交。另外根据原文可知有些学生为完成作业had cut and pasted large amounts of material from different World Wide Websites即从不同网址剪切并粘贴大量内容。由此可见选项D“从网上复制整篇文章或大部分内容”与原文内容相符，是正确答案。

单选题 Using the program developed at the University of California at Berkeley, the papers are checked by ______.

A、 printing and looking carefully at the hundreds of papers on the internet
B、 searching many web pages and comparing words used
C、 asking the students where they got the information in the paper
D、 comparing all the papers which are turned in by the students

【正确答案】 B

【答案解析】解析：特定信息的找寻和判断。根据题干中专有名词定位到原文相关处信息A hundred million Web pages on the Internet are searched．The top 20 search engines are used for the search可知该项目使用最好的20多个搜索引擎搜索上亿个网站，而且Every sentence that was aword-for-word match with another sentence either found on the Internet or within our database is coded即对每个句子中的每个词都进行比照，将比照一致的地方编注。由此可见，B项内容与原文意思相符，是正确的。

单选题 If teachers want to find out if their students wrote their own papers, they ______.

A、 ask other teachers to read their students' papers
B、 ask their students to list their sources of information
C、 can sign up for the Internet service
D、 search the Internet and compare papers

【正确答案】 C

【答案解析】解析：推理判断题。根据原文可知，教师可在网站www.plagiarism.com注册，那么Within 24 hours they know if the student did the work 即24小时以内他们就会知道作业是否是学生们自己完成的。由此可推测若教师想知道作业是否是学生自己完成的，可以注册该网站由其提供服务。由此可见，C项内容与原文意思相符，是正确的。

单选题 The results from the Internet service ______.

A、 are done in a week
B、 aren't very clear
C、 are done in 24 hours
D、 take a long time

【正确答案】 C

【答案解析】解析：数字信息的找寻和判断。根据原文可知，若教师在www．plagiarism.com注册接受服务，那么Within 24 hours they know if the student did the work即24小时以内他们就会知道作业是否是学生们自己完成的。由此可见，C项内容与原文相符，因此该项是正确答案。

单选题 Out of 300 papers checked for fakes, ______.

A、 255 were originals
B、 45 were originals
C、 85% were fakes
D、 155 were originals

【正确答案】 A

【答案解析】解析：数字信息的找寻和判断。根据题干中数字信息，可定位到原文相关信息可知，经该项目检查的三百份论文中，In 45 papers or 15 percent of students had cut and pasted large amounts of material from different World Wide Websites即有45份或15%的学生从不同网站剪切和粘贴了论文的大部分内容。由此可见，A项内容与原文意思相符，是正确的。