单项选择题

Nowadays e-tailers have

A．developed their own unique sales system.
B．formed a viable sales channel themselves,
C．become a part of the whole retailing strategy.
D．established their own reasonable supermarket.
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The dispute over the border area reached a point ______ both countries had to resort to arms.
A．to which
B．on which
C．that
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单项选择题
However, the mass media are with us, ______, and there is us turning back.
A．good or bad
B．better or worse
C．for worse or for better
D．for better for worse
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