The leaves have been swept into huge heaps.A loads B layers C pyramids D piles

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问题 The leaves have been swept into huge heaps.

选项 A loads
B layers
C pyramids
D piles

答案D

解析heap和pile都是“堆”的意思。layer是“层”的意思,load是“负担”的意思, pyramid是“金字塔”的意思。
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