From the last paragraph we can learn that __A some pipes have to be re-arranged in winterB the system can do more than warming up the buildingC the exchangers will pick up heat from the street surfaceD less heat may be collected in winter than in summer
We can infer from the passage that the water table lies .A between the topsoil layer and the subsoil layerB in the subsoil layer above bedrockC between the subsoil layer and bedrockD in the bedrock layer beneath the subsoil
We can learn from the last paragraph that the author believesAHappiness more often than not ends in sadness. BThe anti-happy art is distasteful by refreshing. CMisery should be enjoyed rather than denied. DThe anti-happy art flourishes when economy booms