单项选择题

What is the best title for the passage

A．Virgin Materials and Secondary Materials
B．What is Recycling
C．Solid Waste Management
D．Problems of Recycling
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单项选择题
Which of the following measures can save the country out of poverty
A．The reform of its legal system.
B．The reform of its transportation system.
C．The reform of its economic system.
D．The reform of its political system.
单项选择题
What does the author mean by saying Saudi Arabia will have to learn how to drill human oil wells. ( Para. 4)
A．The Saudi Arabian people will learn how to drill a well by themselves.
B．Saudi Arabia will reform its education system to train more creative youth.
C．Saudi Arabia will encourage more people to drill more oil wells.
D．Saudi Arabia will encourage the people to produce more oil from the wells.
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