题目内容：

    The French Danone company is the latest to replace some plastic water bottles with aluminum (铝) cans. Competitors like Coca-Cola, PepsiCo and Nestle have also started selling water in aluminum cans.

Replacing plastic water bottles that pollute the seas with recyclable aluminum cans should be an easy way to help the environment, right?

Maybe not.

Aluminum cans might result in less ocean waste, and the metal containers also are lighter than glass or plastic bottles, but they also come with their own cost to the environment. The production of an aluminum can is estimated to release two times as much carbon dioxide into the air as a plastic bottle.

“That’s the dilemma you’re going to have to choose between,” said Ruben Griffioen, an official at beermaker Heineken. He said his company was Lrying to reduce the use of plastic bottles.

Bruce Karas of Coca - Cola North America agreed. He said, “There’s a mix. There are some things that are not that desirable, but if you have five good things and one that isn’t, we’ll all have to make decisions.” He added, “It’ll never be that clean.”

Bottled water is a 19 billion industry. Although its use of cans is increasing, experts say cans are unlikely to completely replace plastic bottles.

Aluminum is costlier than plastic so canned drinks mean higher prices for buyers. Another major consideration is user convenience-cans stay open while bottles can be reclosed. More importantly, there is one barrier to ending the use of plastic water bottles: There may not be enough cans to go around. Beer and wine makers are now also increasingly using aluminum.

1.What’s the advantage of aluminum cans?

A.They are pollution-free. B.They are lighter.

C.They are cost-effective. D.They are low-carbon.

2.What is Karas’s attitude to replacing plastic bottles with aluminum cans?

A.Supportive. B.Disapproving. C.Neutral D.Indifferent.

3.What is the main idea of the last paragraph?

A.The wide application of aluminum cans. B.The promising future aluminum cans

C.The major advantages of aluminum cans. D.The unavoidable limitations of aluminum cans.

4.What is the best title for the text?

A.Aluminum Cans or Plastic Bottles? B.A Blessing or a Misfortune?

C.How to Deal with Plastic Bottles? D.Why Do We Choose Aluminum Cans?