It will be emphasized that commercial space operations are inherently complex, l

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问题 It will be emphasized that commercial space operations are inherently complex, long-term, capital-hungry, and set by a variety of risks.

选项 A、beset by
B、inset by
C、preset by
D、reset by

答案 A

解析动词搭配beset(后面常与by连用)困扰；inset插页，插入，嵌入(一般不与by连用)；preset预先安置，预先调试，事先调整；reset重新安排；后面三个词大多作及物动词；而本句意为：需要强调的是民用太空计划复杂，耗时长，资金缺且风险重重。因此A为答案。

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