In attempting to solve the problems caused by a lowering of the price of oil, oil companies operating in the North Sea have taken a variety of approaches, which includes their reducing employment, using new technology to pump oil more efficiently from smaller fields, and finding innovative ways to cut the cost of building and operating platforms.
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Awhich includes their reducing employment, using new technology to pump oil more efficiently
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Bwhich includes reducing employment, using new technology to be more efficient in pumping oil
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Cwhich include reducing employment, using new technology to pump oil more efficiently
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Dwhich include the reduction of employment, their using new technology to pump oil more efficient
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Eincluding a reduction of employment, their use of new technology to be more efficient at pumping oil
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正确答案: C