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  3. Man has used metals for centuries in gradual increasing quantities, but

Man has used metals for centuries in gradual increasing quantities, but

游客2025-01-29  7
问题 Man  has  used  metals  for centuries  in  gradual  increasing  quantities,  but  it  was  not  until  the Industrial Revolution that they came to be employed in vast quantities.
选项 A、gradually increasing quantities
B、increased quantities gradually
C、gradual increased quantities
D、increasingly gradual quantities
答案 A
解析 根据句意可知，画线处的中心词是quantities，而修饰increasing应用副词gradually，故选A。increasing表示“持续增长的”，而increased意为“增长了的”，与句意不符，排除B和C。
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