种子的休眠
参考答案：在适宜发芽的条件下，作物种子和供繁殖的营养器官暂时停止萌发的现象。
The noise from the top floor，loud and constant，of the meeting-room_________ can be clearly heard in our classroom．
A．to decorate
B．having been decorated
C．being decorated
D．decorating
对景
