题目

It was a winter morning， just a couple of weeks before Christmas 2005. While most people were warming up their cars， Trevor， my husband， had to get up early to ride his bike four kilometers away from home to work. On arrival， he parked his bike outside the back door as he usually does. After putting in 10 hours of labor， he returned to find his bike gone. The bike， a black Kona 18 speed， was our only transport. Trevor used it to get to work， putting in 60-hour weeks to support his young family. And the bike was also used to get groceries （食品杂货）， saving us from h在测量裸地、草地、灌丛湿程中，下列哪些数据能够横比（ ）A．裸地的早上湿度和草地的中午湿度B．草地的早、中、晚湿度C．裸地的早晚湿度和草地的晚、早湿度D．裸地的中、晚湿度和灌丛的中、晚湿度