There was a time when a trip to the supermarket in the United States often en

题干

There was a time when a trip to the supermarket in the United States often ended with a seemingly simple question from the cashier, "Paper or plastic？"Well, which type of bag would you choose？

While both types of bags have some influence on the environment, it has long been supposed that paper bags are kinder. They are made from a renewable source, are broken down easily, burn without giving off thick smoke and can be recycled. However, the producing process behind paper bags uses more energy than that of plastic ones. How can this be true？

Studies show that paper bag production requires four times as much energy as plastic bag production.

And the amount of water used to make them is twenty times higher. Besides, the influence on forests is very serious. It takes about fourteen million trees to produce ten billion paper bags, which happen to be the number of bags used in the United States yearly. In terms of recycling, the idea that paper bags are more environment friendly than plastic ones can be quickly discarded. Research shows it requires about 98% less energy to recycle plastic than it does to recycle paper.

Even though paper bags might be more harmful than plastic ones, plastic still seems to be considered as the more harmful of the two by governments. In Ireland, for example, a tax has been introduced to discourage the use of plastic bags. People have to pay 22 cents for every plastic bag, and as a result, their use has dropped quickly.

There’s no doubt that it makes more sense to reuse these bags. However, we don’t seem to be doing that at present. That may be because they fall apart quickly. If so, cloth bags are a better choice, but still, their production also has a bad influence on the environment. So what to do? How should we answer the question of “Paper or plastic?” It seems that we first need to ask ourselves one more general question: “What can I do to help the environment?”

【小题1】The question at the end of Paragraph 1 is used to ________.

A．introduce points for discussion

B．tell readers how to save money

C．express the author's doubts

D．show the kindness of the cashier

【小题2】Compared with plastic bags, paper bags ________.

A．take more time to break down

B．require less energy to recycle

C．need more water to produce

D．have less influence on forests

【小题3】The underlined word “discarded” in Paragraph 3 probably means "________".

A．share	B．put forward
C．discuss	D．give up

【小题4】Which question does the author probably hope the cashier ask?

A．Paper or cloth?

B．A new bag or your own one?

C．A small bag or big one?

D．Paper or plastic？

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同类题2

Dragging a sleigh loaded with enough presents for the world’s children can be no easy skill. But, since ancient times, the Christmas Eve duty has been performed by a team of beloved reindeer.

Soon, however, Santa Claus may have to start looking around for a stronger type of animal, as newresearch shows the species is becoming increasingly puny. A 16-year survey on the arctic Norwegian islands, Svalbard, found the reindeer there have declined in weight by an alarming 12 percent.

The reduction in average body weight is being blamed on global warming. In the research presented lately at a meeting of the British Ecological Society in Liverpool, scientists have explained how upward temperatures are robbing female reindeer of nutrients during important periods of pregnancy.

Snow in Svalbard typically covers the ground for eight months of a year, which, combined with low temperatures, limits grass growth to June and July. But as summer temperatures increase by around 1. 5℃, grass has become more productive, allowing female reindeer to gain more weight by autumn and therefore to have more babies. However, winters have brought with them greater rainfall which freezes when it settles on the snow. Reindeer can often access the poor food sources beneath the snow by clearing it away with their antlers (鹿角) , but they cannot break through the hard ice. As a result, female reindeer are becoming starved, causing them to lose their babies or give birth to the much lighter young.

Despite the findings, reindeer appear to be suffering less from the effect of climate change than some other arctic species. Last week the scientists warned that a third of the world’s polar bears could disappear in the next 40 years.

【小题1】Which of the following can replace the underlined word “puny” in Paragraph 2?