The number of black hawks has ______ because the encroachments of humans on their territory have caused them to shun their custo

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问题 The number of black hawks has ______ because the encroachments of humans on their territory have caused them to shun their customary breeding places.

选项 A、dwindled
B、extrapolated
C、increased
D、multiplied

答案A

解析 本题考查动词辨析。根据原因状语从句“人类对其领地的侵占致使它们避开了惯常的繁殖地”判断,黑鹰的数量减少了,dwindle((数量上)减少,缩小)符合语义,故答案为[A]项。extrapolate意为“推断,推知”;increase意为“增加,增长”;multiply意为“(使)倍增,(使)大大增加”。
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