A. About 2, 200.
B. About 30 percent.
C. About 50 percent.
D. About 440.
【解析】选D。数字计算题。根据文章第二段In a recent survey of more than 2, 200 professors, only one in five thought that online courses could be as effective as classroom curricula得知, 接受调查的2 200个教授中, 有五分之一认为二者的有效性相等。故选D。
3. According to the text, which of the following statements is TRUE?
A. The professors are worried that the interaction between students and teachers is not enough.
B. New technologies often turn products and services into goods of high quality.
C. If you refuse to change, you will lose in most fields.
D. People who taught an online course gave us the exact data of the survey.
【解析】选A。推理判断题。根据第二段Their biggest concern: limited interaction between teachers and students. 得知被调查者担心这种网络公开课程会导致师生之间的互动不够。
4. What is the author’s attitude towards the result of the survey?
A. Doubtful.
B. Optimistic.
C. Worried.
D. Proud.
【解析】选A。观点态度题。根据文章末段作者提出的对参与对象的质疑, 以及重复提出一些人对网络开放课程的支持可知, 作者对调查结果持怀疑态度。
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