单项选择题

Passage Two
Questions 29 to 31 are based on the passage you have just heard.

[A] Education. [C] Administration.
[B] Public security. [D] Transportation.
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单项选择题
What does the author mainly discuss in this passage
[A] How to avoid car crash.
C. How to educate children properly.
B. How to design safer baby equipment.
D. How to properly secure children in the car.
单项选择题
With the intention of attracting a somewhat different type of passenger, the airlines have now begun to concentrate on ______.
A．ensuring that the facilities offered to the executive are indeed superior
B．providing facilities enabling business travelers to work on board
C．organizing activities in which first-class passengers can participate
D．installing sleeping compartments where more privacy is ensured
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