单选题
Nothing has ever equaled the ______ and speed with which the human species is altering the physical and chemical world.
A、
concern
B、
magnitude
C、
volume
D、
carelessness
【正确答案】
B
【答案解析】
[解析] concern“关心,忧虑”;magnitude“(量,范围的)大小”;volume“体积,容量”;carelessness“粗心”。答案是B。
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