单项选择题
Passage Three Questions 32 to 35 are based on the passage you have just heard.
A. A half hour. B. 15 minutes. C. 20 minutes. D. An hour and a half.
A．Google overestimates its technique. B．Google’s new on-line program attracts more users. C．Its rivals are trying to form alliance. D．Google extends into various fields.