Complete the following sentences with appropriate words in the box. Change their forms if necessary.retainbiodiversesustainablerenewableaffordablecalamityubiquitousinsulation The more heat flow resistance your __ provides, the lower your heating and cooling costs. Properly ____ your home not only reduces heating and cooling costs, but also improves comfort. 答案: (以下答案任选其一都对)insulation, insulating; insulation insulating