单选题 The town of Greenfield recently instituted a substantial supplementary tax on all households, whereby each household is taxed in proportion to the volume of the trash that it puts out for trash collectors to pick up, as measured by the number of standard-sized garbage bags put out. In order to reduce the volume of the trash on which their tax bill is based, Greenfield households can deliver their recyclable trash to a conveniently located local commercial recycling center, where such trash is accepted free of charge.
The supplementary tax provides some financial incentive to Greenfield households to do each of the following EXCEPT

A、 sort out recyclable trash thoroughly from their other trash.
B、 dump nonrecyclable trash illegally at parks and roadsides.
C、 compress and nest items of nonrecyclable trash before putting them out for pickup.
D、 deliver recyclable materials to the recycling center instead of passing them on to neighbors who want to reuse them.
E、 (E) buy products without packaging or with recyclable rather than nonrecyclable packaging.

【正确答案】 D

【答案解析】[解析] (D)是本题明显该选的答案，因为不管是把回收的材料送给回收中心，还是把它们送给想重新使用它们的邻居，这些家庭都得不到经济上的利益。所以他们不会选择前者而舍弃后者，相反他们把可回收的材料送给他们的想重新使用这些材料的邻居的可能性更大一些。(A)、(B)、(C)和(E)都可以减少这些家庭的基于垃圾数量的税单，因此都不是正确答案。