Paper or Plastic? Take a walk along the Chesapeake Bay, and you are likely to see plastic bags floating in the water. They have made their (51) into local waterways and, from there, into the bay, where they can (52) wildlife. Piles of them show up in landfills (垃圾填埋地) and on city streets. Plastic bags also take an environmental toll (代价) in the (53) of millions of barrels of oil expended every year to produce them. Enter Annapolis and you will, see plastic bags (54) free in department stores and supermarkets. Alderman (市议员) Sam Shropshire has introduced a well-meaning (55) to ban retailers from distributing plastic shopping bags in Maryland's capital. instead, retailers would be required to (56) bags made of recycled paper and to sell reusable bags. The city of Baltimore is (57) a similar measure. Opponents of the (58) , however, argue that paper bags are harmful, too: They cost more to make, they (59) more resources to transport, and recycling them causes more pollution than recycling plastic. The argument for depriving Annapolis residents (60) their plastic bags is far from accepted. Everyone in this (61) is right about one thing: Disposable shopping bags of any type are wasteful, and the best outcome would be for customers to (62) bags instead. Annapolis's mayor is investigating how to hand out free, reusable shopping bags to city residents, a proposal that can proceed (63) of whether other bags are banned. A less-expensive alternative ,would be to encourage retailers to give (64) to customers Who bring their own reusable bags. And this policy would be more (65) if stores imitated furniture mega-retailer (超大零售商) . Ikea and charged for disposable bags at the checkout counter. A broad ban on the use of plastic shopping bags is not the answer.