单选题 During the first half of the twentieth century, the average American household was ______ by the introduction of a group of machines that profoundly altered the daily lives of housewives.
A. transformed B. transferred C. transmitted D. transported

【正确答案】 A

【答案解析】transform转换，改变，表示改变某物的形状、外观、性质；transfer转移，转换(from…to)；转让，过户；transmit，传播(疾病)，播送；传递，传导，传送(无线电信号)；transport运输，运送，transport sth．(from somewhere)(to somewhere)把某物从某地运输到某地。本句的意思是：“20世纪上半叶，普通的美国家庭由于一组机器的引进而改观，这些机器大大改变了家庭主妇的日常生活。”