单选题
Last Sunday she came to visit us
out of the blue
. The italicized phrase means ______.
【正确答案】
A
【答案解析】[解析] 题干:上个星期天,她突如其来地拜访了我们。斜体短语out of the blue和下面哪个单词同义?考查固定用法和副词词义。out of the blue表示unexpectedly, without Warning“未经事先告知地,突如其来地”,A与此含义一致。unhappily“不高兴地”;untidily“不干净地,不整洁地”;unofficially“非正式地”,均与题意不符。