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  3. But the fragileecosystem could be hurt by a plan to dredge more than 23 miles of

But the fragileecosystem could be hurt by a plan to dredge more than 23 miles of

游客2023-12-30  46
问题 But the fragileecosystem could be hurt by a plan to dredge more than 23 miles of river at the delta’s southern end.
选项 A、flimsy
B、optical
C、marginal
D、vacant
答案 A
解析 句意：在三角洲最南部计划挖掘23多英里长的河流，可能会破坏脆弱的生态系统。fragile(脆弱的)；flimsy(与fragile同义)；optical(视力的)；marginal(边缘的)；vacant(空的，空缺的)。
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