材质相同的A、B两种材料,已知表观密度ρOA>ρOB,则材料A的保温效果比材料B( )
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1. Would you buy a _____car from this man?(use)
2. Light industry is closely______to agriculture. (relate)
We were______at his rapid recovery. (amaze)
4. I'm so_______that I could sleep for a week. (tire)