单项选择题

Many companies are seeking to exploit and develop the rich natural（）in western regions.

A．sources
B．resources
C．materials
D．power

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单项选择题

A．recovered
B．survived
C．existed
D．discovered

单项选择题

A．put out
B．put away
C．put up
D．put on

单项选择题

Would you like to come to see a film with me tonight?
I’d love to, （）I didn’t finish my homework yet.

A．and
B．so
C．as
D．but