单项选择题

What does the author mainly discuss in this passage

A．How to avoid car crash.
B．How to educate children properly.
C．How to design safer baby equipment.
D．How to properly secure children in the ear.
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单项选择题
Which of the following is NOT among the improper ways mentioned in the passage
A．They don't know where best to place the child.
B．They don't have the safety equipment for the child.
C．They don't use the proper restraint for the kid's age and weight.
D．They don't install the safety seats properly.
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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