Oil is an important ______ material which can be processed into many different products, including plastics.

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问题 Oil is an important ______ material which can be processed into many different products, including plastics.

选项 A、raw
B、bleak
C、flexible
D、fertile

答案A

解析 本题考点为形容词语义辨析。根据上下文,只有raw与后面的material搭配恰当,意为“原料”;故选项A为正确答案。
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