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Locust-patrolling pilots in Kenya, Ethiopia and Somalia flew the equivalent of three times the （） of the globe last month.

Locust-patrolling pilots in Kenya, Ethiopia and Somalia flew the equivalent of three times the （） of the globe last month.
A.quantity
B.volume
C.circumference
D.length
正确答案：circumference

标签：硕士生英语进阶

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