单项选择题

Questions 1～3 are based on the following talk; listen and choose the best answer. According to the last paragraph, we should ______.

A．replace the use of steel with aluminum
B．telecommute from home
C．reduce water needs by improving technology
D．reduce the goods and services we demand

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单项选择题What was Strassberg s study designed to find out

A．The people"s attitude toward online personal ads.
B．The effective way to place personal ads on the Internet.
C．The most popular medium to place personal ads in.
D．The motivation that drives those who place personal ads on the internet.

单项选择题This passage is mainly about ______.

A．the attempt to make people become "computer-literate"
B．the attempt to make computers become "people-literate"
C．the disadvantages of computer clubs
D．the importance of experiment on computers

Questions 1～3 are based on the following talk; listen and choose the best answer. According to the last paragraph, we should ______. 您的浏览器不支持 audio 元素。

Questions 1～3 are based on the following talk; listen and choose the best answer. According to the last paragraph, we should ______.