" Hotel workers suspect that the fire was ignited by a cigarette and that a guest may have thrown the cigarette into a bush from

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问题 " Hotel workers suspect that the fire was ignited by a cigarette and that a guest may have thrown the cigarette into a bush from the pool deck. " The modal auxiliary verb phrase "may have thrown" in the sentence expresses________.

选项 A、high possibility in the past
B、low possibility in the present
C、high possibility in the present
D、low possibility in the past

答案D

解析 本题考查情态动词。情态动词+have+过去分词”的结构表示过去的行为,故排除B项和C项。情态动词may表可能性较低的推测,故答案为D项。
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