GRE考试

【单选题】It can be inferred from the passage that which of the following was the prime goal in scientists’ searching for organic means of producing plastic
A、the reduction of energy used in petrochemical plastic manufacture
B、the reduction of the production cost of petrochemical manufacture
C、the development of a biodegradable plastic
D、the creation of plastics with more useful qualities
E、the reduction of fossil fuel emissions in the environment
网考网参考答案：C
网考网解析：
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