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Researchhasbeenlimitedtoproductionprofits,ratherthanthatGMfoodsaresafe.A.increasing;makesureB.increasing;makingsureC.increase;makesureD.increase;makingsure

题目详情
Research has been limited to ____ production profits, rather than ____ that GM foods are safe.
A.increasing; make sure B.increasing; making sure
C.increase; make sure D.increase; making sure
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答案和解析
B