25. What's the passage mainly about?
A. The importance of sorting trash.
B. The necessity of using durable goods.
C. The benefits of limiting disposable goods.
D. The controversy of recycling.
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26. What's the meaning of the clause "the joy comes with a dollar sign attached "in Paragraph1?
A. Installing solar panels at home saves money for consumers.
B. Consumers will be paid to install solar panels.
C. Solar panels will bring financial gains to consumers.
D. The environmental benefit means financial gains.
27. Which benefit is guaranteed?
A. The federal government's tax credit.
B. The state's incentives.
C. The utility's help somewhere.
D. The installer’s services.
28.Which is NOT true of a good solar panels installer?
A. He has the necessary permits.
B. He'll connect the solar energy system to your home.
C. He'll sell your solar electricity to the grid.
D. He'll apply for incentives for you.
29.Which is the cheapest option for a solar system?
A. Pay for it completely.
B. Lease it somehow.
C. Sell all the electricity generated.
D. Get bank loans for it.
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