Scientific interest in providing suitable habitats for bottom-dwelling animals s

游客2024-01-13  15

问题 Scientific interest in providing suitable habitats for bottom-dwelling animals such as river clams arises not because they are important sources of human food but from their role as an integral link in the aquatic feed chain.

选项 A、not because they are important sources of human food
B、although they are not an important sources of human food
C、not in that they are important as human sources of food
D、not from their importance as a source of human food
E、not from being important sources of food for human beings

答案 D

解析 本句是not…but结构,由but之后的from their role决定了与其形式上对应而又符合句意的仅有D选项。
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