建筑装饰装修工程常见的施工质量缺陷有：空、裂、渗、（）差等。

A、外形尺寸

B、观感效果

C、颜色

D、外观

The main idea of this passage is that ______.

A．there are life-supporting characteristics on the Earth

B．the Earth is predominantly water

C．the Earth has no common characteristics with other planets

D．the Earth is the only planet with a moon