( )authorities allow about one ton to each foot of length.
问题1选项
A.To calculate the weight of an average adult whale
B.They calculate the weight of an average adult whale
C.In the calculation the weight of an average adult whale
D.Even though they calculate the weight of an average adult whale
【选项释义】 A. To calculate the weight of an average adult whale为了计算一头成年鲸鱼的平均体重(不定式短语) B. They calculate the weight of an average adult whale他们计算了一头成年鲸鱼的平均体重(完整句子) C. In the calculation the weight of an average adult whale不存在该说法 D. Even though they calculate the weight of an average adult whale即使他们计算了一头成年鲸鱼的平均体重(让步状语从句) 【考查点】句法结构 【解题思路】A选项不定式短语作目的状语,符合句法结构和语义逻辑。 【干扰项排除】 B选项,一个句子在没有连词和引导词的情况下不能同时存在两个谓语动词,故不符合语法逻辑; C选项不存在该说法,应该在calculation后面加of使语义完整; D选项表示让步关系,与题意不符。 【句意】为了计算一头普通成年鲸鱼的重量,当局允许每英尺长度有一吨左右。