Every year，nearly 270 million pounds of grapes arrive in California，most of them from Chile to the Port of Los Angeles.
A. are shipped
B. is shipped
C. shipping
D. shipped
网友回答
A. are shipped
B. is shipped
C. shipping
(答案→)D. shipped
解析：考查独立主格结构：句意：每年有将近两亿7千万吨葡萄到达加力福利亚，其中大部分被用船从智力晕倒洛杉矶港口。因为是most of them所以不是定语从句，而且两句话之间没有连词，也不是并列句或复杂句，所以不能填谓语动词，而是非谓语，排除A或B，这是独立主格结构，逻辑主语most of them后面接非谓语动词，因为most of them和ship（用船运）之间是被动关系，所以用过去分词做状语，选D。