单项选择题

What is essential in making a modern car tougher to steal

A．A coded ignition key.
B．A special cellphone signal.
C．A unique ID card.
D．A GPS satellite positioning receiver.
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单项选择题
The author argues that educating girls in developing countries is ______.
A．troublesome
B．rewarding
C．labor-saving
D．expensive
单项选择题
By saying ... the prophecy becomes self-fulfilling... (Lines 45. Para. 2), the author means that ______.
A．girls will turn out to be less valuable than boys
B．girls will be capable of realizing their own dreams
C．girls will eventually find their goals in life beyond reach
D．girls will be increasingly discontented with their life at home
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