语法与词汇 Mr. Brown’s condition looks very serious and it is doubtful if he will _____.
【正确答案】 C
【答案解析】句意:布朗先生情况紧急,不知道他能否度过危险期。pull through度过难关,脱离危险期。Pull back拉回,撤回。pull up停下。pull out拔出,抽出。