2019年12月四六级真题答案※ 对答案 ※ 估分

　　仔细阅读

　　46-50 BCDBA

　　51-55 DABAC

　　46.B It may encourage other US cities to follow suit。

　　47.C Take legal action against it。

　　48. D It criticized the measure through advertising。

　　49. B Help people to fix certain long-time health issues。

　　50. A They are becoming rather sensitive issues。

　　51.D The use of microwaves emits more CO2 than people think

　　52.A They are becoming more affordable

　　53.B Improving microwave users‘ habits

　　54.A There are far more emissions from cars than from microwaves

　　55.C It plays a positive role in environment protection。

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