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  3. In addition to their (usefulness) as scavengers, birds are of (enormous value) t

In addition to their (usefulness) as scavengers, birds are of (enormous value) t

游客2025-02-09  74
问题 In addition to their (usefulness) as scavengers, birds are of (enormous value) to humans (because) of they eat insects and control the (spread) of weeds.
选项 A、usefulness
B、enormous value
C、because
D、spread
答案 C
解析
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