Disposing(处理) of waste has been a proble

题型:阅读理解

问题:

Disposing(处理) of waste has been a problem since humans started producing it. As more and more people choose to live close together in cities, the waste-disposal problem becomes increasingly difficult.

During the eighteenth century, it was usual for several neighboring towns to get together to select a faraway spot as a dumpsite. Residents or trash haulers(垃圾托运者) would transport household rubbish, rotted wood, and old possessions to the site. Periodically(定期的) some of the trash was burned and the rest was buried. The unpleasant sights and smells caused no problem because nobody lived close by.

Factories, mills, and other industrial sites also had waste to be disposed of. Those located on rivers often just dumped the unwanted remains into the water. Others built huge burners with chimneys to deal with the problem.

Several facts make these choices unacceptable to modern society. The first problem is space. Dumps, which are now called landfills, are most needed in heavily populated areas. Such areas rarely have empty land suitable for this purpose. Property is either too expensive or too close to residential(住宅区的)neighborhoods. Long-distance trash hauling has been a common practice, but once farm areas are refusing to accept rubbish from elsewhere, cheap land within trucking distance of major city areas is almost nonexistent.

Awareness of pollution dangers has resulted in more strict rules of waste disposal. Pollution of rivers, ground water, land and air is a price people can no longer pay to get rid of waste. The amount of waste, however, continues to grow.

Recycling efforts have become commonplace, and many towns require their people to take part. Even the most efficient recycling programs, however, can hope to deal with only about 50 percent of a city's reusable waste.

小题1:The most suitable title for this passage would be ______.

A.Places for Disposing Waste

B.Waste Pollution Dangers

C.Ways of Getting Rid of Waste

D.Waste Disposal Problem小题2:During the 18th century, people disposed their waste in many ways EXCEPT for ______.

A.burying it

B.recycling it

C.burning it

D.throwing it into rivers小题3:What can be inferred from the fourth paragraph?

A.Farm areas accept waste from the city in modern society.

B.There is cheap land to bury waste in modem society.

C.It is difficult to find space to bury waste in modem society.

D.Ways to deal with waste in modem society stay the same.小题4: The main purpose of writing this article is to ________.

A.draw people's attention to waste management

B.warn people of the pollution dangers we are facing

C.call on people to take part in recycling programs

D.tell people a better way to get rid of the waste

考点:科教类阅读
题型:阅读理解

一个两位数的十位上的数是a,个位上的数是b,则这个两位数可表示为(    )

题型:阅读理解

在净现值法下,若净现值大于零,说明方案的( )大于资金成本。

A.利润总额

B.投资报酬率

C.贴现率

D.销售利润率

题型:阅读理解

华支睾吸虫病急性感染出现黄疸的原因是()

A.胆汁性肝硬化

B.免疫反应引起溶血性黄疸

C.大量成虫堵塞胆总管

D.感染中毒致肝细胞黄疸

E.引起肝炎所致

题型:阅读理解

该患儿的最佳治疗方案为

A.补铁

B.维生素B12+叶酸

C.单纯维生素B12治疗

D.单纯叶酸治疗

E.激素治疗

题型:阅读理解

二十八初孕妇,孕33周,自觉乏力、食欲差,伴恶心、呕吐2周,小便深黄色,皮肤瘙痒5日。查体:体温37.5℃,血压130/90mmHg,神志清,皮肤巩膜黄染,躯干及四肢皮肤可见散在出血点,肝肋下未触及,胎头入盆,胎心140次/分。

若ALT542U/L,总胆红素85.5μmol/L,结合胆红素46μmol/L,尿胆红素(+),HBsAg(+),本例最可能的诊断是()

A.妊娠高血压疾病引起的肝损害

B.妊娠剧吐

C.妊娠急性脂肪肝

D.妊娠合并病毒性肝炎

E.妊娠肝内胆汁淤积症

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