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举一反三
【单选题】下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案。第一篇 Electronic Mail During the past few years, scientists all over the world have suddenly found themselves productively ...
A.
Their functions cannot be replaced by E-mail.
B.
They will co-exist with E-mail for a long time.
C.
Less and less people will use them.
D.
They will play a supplementary function to E-mail.
【单选题】Passage One Questions 11 to 13 are based on the passage you have just heard.
A.
How to give tips.
B.
How to give tips in a restaurant.
C.
How to give tips in a hotel.
D.
How to give tips in a taxi.