____________(从正反两个方面权衡这个讨论之后), it seems there are good economic and ecological r

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问题 ____________(从正反两个方面权衡这个讨论之后), it seems there are good economic and ecological reasons for sources of energy other than nuclear power.

选项

答案 Having weighed up the arguments on both sides

解析考查现在分词短语作状语的用法，时态也要被考虑进去，从句子分析来看，需用现在完成时。

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【S1】[br]【S4】people,∧there→and缺漏。逗号没有连接句子的功能，所以此处应有一个连词and将两个分句连接起来。