The most expensive diamonds are usually white in color.
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What is the purpose of this passage？
A. To talk about winter sports
B. To warn of an impending storm
C. To ask drivers to drive more
D. To remind people to eat well
What does the man have to bring into the conference room？
A whiteboard
B. Chairs and desks
C. A screen and projector
D. Handouts
The commercial campaign by De Beers changed our perception of diamonds.
A. Y
B. N
C. NG
What is the purpose of this news？
A. To update the weather
B. To provide traffic information
C. To talk the political situation
D. To sell new and used cars
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