【单选题】 It's not just the sheer accumulation of technology that makes their development so fast; but the cooperation among the members.
A.sharp
B.pure
C.considerable
D.perfect
网考网参考答案:B
网考网解析:
sheer绝对的,纯粹的;sharp锋利的,敏锐的;pure完全的,纯粹的;considerable相当大的,很大的;perfect美好的,完美的。
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