第2题: [单项选择]He leaned out of an upstairs window and felt a current of warm air ______ from the street. A. floating B. raising C. heaving D. ascending 参考答案:D 答案解析:[解析] 语义连贯题。热气从街上上升到楼上的窗户用ascend。[D]ascending指物体逐渐或继续上升,升起。[B]raising为及物动词,表示把某物送到垂直高度或高处位置。[C]heavin