It is so wet there that the trees are extremely tall, some over 90 metres.
A. are measured
B. measuring
C. measured
D. measure
网友回答
A. are measured
(答案→)B. measuring
C. measured
D. measure
解析：考查独立主格结构，句意：这儿是如此潮湿，以至于树很高，一些高达90米。the trees are extremely tall是完整的句子，中间没有连词，说明后面是独立主格结构， some是逻辑主语，后面是非谓语动词做状语，measure后面接数词，表示：长，宽，高是多少的时候，measure是不及物动词，用现在分词。选B。