Erosion that is a slow process, but it constantly changes the features on the su

游客2025-01-31 17

问题 Erosion that is a slow process, but it constantly changes the features on the surface of the earth.

选项 A、which is
B、although
C、being
D、is

答案 D

解析结构应用。本句是由but连接的并列结构，前后均应有完整的主谓结构；划线部分中的that使前句成为一个从句，去掉它则句子成立，因此D为答案。

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