问题 单项选择题


阅读下面短文,回答下 * * 道题。
加拿大某公司建造了一座示范厂,用酒精而不是用硫磺造纸浆。该公司董事长佩蒂说:
“这是未来之路。用酒精制造纸浆意味着出现一种清洁、无污染的技术。”
如果在小规模工业里取得成功的这项技术也能在正式规模的工厂里生产出较便宜的纸浆,它将对纸价产生影响,这项技术还能消除造纸工业常有的臭鸡蛋味______硫化氢的气味。
该公司使用的这种工艺叫ALCELL(即酒精ALCOHOL和纤维素CELLULOSE的合成词),它使用酒精和水代替硫磺把木材分解成纸浆。这种工艺是加拿大在1972年发明的,以前从来没有实现商品化,但是这家公司希望它能使造纸工业发生彻底变革。
佩蒂说:“建造一座新的纸浆厂要耗资10亿美元,而且它要求木材供应源源不断。如有 ALCELL工艺,只要耗资3.5亿美元就能建造一个工厂,并使工厂不停地运转,所需木材供应量较小。”他又说:“那意味着一个工厂一天生产350吨而不是1 000吨纸浆。”林业产品分析家邓肯森说:“从环境方面来说,它比较清洁,而且小型厂这个概念将会使建造新纸浆厂变得较容易。”这种工艺取得成功,它将能以较低的成本生产纸浆。

第四段中,佩蒂说“一天生产350吨而不是1 000吨纸浆”,他要说明的是______。

A.纸厂规模的缩小

B.纸张成本的降低

C.生产流程的简化

D.纸浆产量的减少

答案

参考答案:A

解析:“建造一座新的纸浆厂要耗资10亿美元,而且它要求木材供应源源不断。如有 ALCELL工艺,只要耗资3.5亿美元就能建造一个工厂,并使工厂不停地运转,所需木材供应量较小。”林业产品分析家邓肯森说:“从环境方面来说,它比较清洁,而且小型厂这个概念将会使建造新纸浆厂变得较容易。”依照文中所说,A项为正确答案。

多项选择题
单项选择题

Napoga is a 12-year-old girl in Ghana(加纳), Africa. It is hard for her family to get clean water. Every morning, she leaves home at half past five to get clean water for her family in a village far away. It takes her six hours to get enough clean water for daily cooking and drinking. She has no time to go to school or to play with her friends. Millions of people in the world are like Napoga. They can’t get enough clean water to keep healthy.
Earth Day is April 22. But on all other days, we must also remember it. The water we use is the most important natural resource on the earth.
Water covers 70% of the earth’s surface. But most of that is sea water. We can’t use it for very many things. Fresh water covers only 1% of the earth’s surface.
You probably feel lucky that your life isn’t as hard as Napoga’s. But that doesn’t mean you don’t have to worry about water. We all face serious water problems. One of them is water pollution. All kinds of things from cars, factories, farms and homes make our rivers, lakes, and oceans dirty. Polluted water is very bad for people to drink. And dirty water is bad for fish, too. Now, 34% of all kinds of fish are dying out.
How do cars and factories make our water dirty First, they pollute the air. Then, when it rains, the rain water comes down and makes our drinking water dirty. Dirty rain, called acid rain, is also bad for plants, animals and buildings.
Scientists say that in 30 years, more than half of the people in the world won’t have enough clean water. We have to learn how to save more water for ourselves and our children. Here is some advice for saving water:
· Turn off the water while you brush your teeth. You can save as much as 450 liters each month.
· Leaky taps waste a lot of water. Fix them right away!
· You can easily cut your 10-minute showers in half—and you’ll be just as clean.
· When you wash dishes, don’t let the water run.
· Only wash clothes when you have a lot to wash. If your washing machine isn’t full, you’re wasting water !

Which of the following wastes water

A.We need ten minutes if we want a clean shower.

B.We should put in enough clothes when we wash them in washing machines.

C.You can keep yourself clean by having a shower for five minutes.

D.Don’t let the water run when we brush our teeth and wash dishes.