单项选择题

The author indicates that a passenger-side air bag ______.

A．might not be dangerous if switched off
B．is designed for the safety of children
C．is discharged at 320 km/h and will not triggered by other factors
D．is not working if a child sits in the seat
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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 ear.
A．What does the author mainly discuss in this passage
B．How to avoid car crash.
C．How to design safer baby equipment.
D．How to educate children properly.
E．How to properly secure children in the ear.
单项选择题
One criticism against many international airlines is that they have ______.
A．catered for the more wealthy people
B．given preferential treatment to executive clients
C．only met the needs of the regular traveler
D．marketed their service with the quantity of the travelers in mind
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