事考帮-19. So large is the Pacific, _____ 30% of the earth’s surface, that the energy generated by its warming is enough to touch off a series of weather changes.的答案及解析

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单选题 19. So large is the Pacific, _____ 30% of the earth’s surface, that the energy generated by its warming is enough to touch off a series of weather changes.

covered

covering

having covered

being covered

正确答案：B

解析

本题考查英语语法——非谓语。
句意“太平洋面积如此之大，覆盖了地球表面的30% ，以至于其变暖所产生的能量足以引发一系列天气变化。”分析句子结构可知，本句子包含一个结果状语从句，主句为“So large is the Pacific”，结果状语从句为“the energy generated by its warming is enough to touch off a series of weather changes.” 还原语序应为“The Pacific is so large that the energy generated by its warming is enough to touch off a series of weather changes.” 动词“cover”和其逻辑主语“the Pacific”之间构成主动关系，用现在分词形式作状语，进行补充说明。故B项符合题意。
A、C、D项为干扰选项，故排除。
故本题答案为B。