单选题 Old Mr. Brown"s condition looks very serious and it is doubtful if he will ______.
【正确答案】 B
【答案解析】[解析] 句意：老布朗的情况很严重，很难确定他是否能转危为安。pull through度过危机；恢复健康。pull up使停下。pull down拆毁。pull away开走，使离开。