单项选择题

Which of the following is correct

A．The thirty-foot-long pipe was not a straight one.
B．There were no big bends in the solid stone.
C．Solid stone had to be put into the pipe.
D．In one place the workmen had to put big bends into some new wiring.

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单项选择题

What would be the best title for the text

A．Business and People
B．Business Goes Green
C．Shopping Habits Are Changing
D．Supermarkets and Green Products

单项选择题

It becomes clear from the text that the driving force (动力)behind green products is ________.

A．public caring for the environment
B．companies desire for bigger sales
C．new ways of doing business
D．rapid growth of supermarkets