Water problems in the future will become more intense and more complex. Our increasing population will tremendously increase urban wastes, primarily sewage. On the other hand, increasing demands for water will decrease substantially the amount of water available for diluting wastes. Rapidly expanding industries which involve more and more complex chemical processes will produce larger volumes of liquid wastes, and many of these will contain chemicals which are noxious. To feed our rapidly expanding population, agriculture will have to be intensified. This will involve ever - increasing quantities of agricultural chemicals. From this, it is apparent that drastic steps must be taken immediately to develop corrective measures for the pollution problem.
There are two ways by which this pollution problem can be dwindled(减少). The first relates to the treatment of wastes to decrease their pollution hazard . This involves the processing of solid wastes "prior to" disposal and the treatment of liquid wastes, or effluents, to permit the reuse of the water or minimize pollution upon final disposal .
A second approach is to develop an economic use for all or a part of the wastes. Farm manure is spread in fields as a nutrient or organic supplement. Effluents from sewage disposal plants are used in some areas both for irrigation and for the nutrients contained. Effluents from other processing plants may also be used as a supplemental source of water. Many industries, such as meat and poultry processing plants, are currently converting former waste products into marketable byproducts. Other industries are potential economic uses for waste products.
【小题1】The purpose of this passage is ________.

A．to alert the reader to the dwindling water supply

B．to explain industrial uses of water

C．to acquaint the reader with water pollution problems

D．to demonstrate various measures to solve the pollution problem

D
The eruption of a volcano in the Canary Islands could trigger a “mega-tsunami”（巨大海啸）that would hit Atlantic coastlines with waves as high as 330 feet, scientists said on Wednesday. They said an eruption of the Cumbre Vieja volcano on La Palma, part of the Spanish island chain off West Africa, was likely to cause a massive chunk（大块）of rock to break off, crashing into the sea and kicking up huge walls of water higher than any other in recorded history. The tsunami would be capable of traveling huge distances at up to 500 miles an hour, the scientists said in a research paper to be published soon.
Simon Day, of the Benfield Greig Hazard Research Centre at the University College of London, said that as the volcano was not erupting at present, the short-term and medium-term risks were “negligible”. But Cumbre Vieja should be monitored closely for any signs of activity so that emergency services could plan an effective response, he said. “Eruptions of Cumbre Vieja occur at intervals of decades to a century or so and there may be a number of eruptions before its collapse（倒塌）,” said Day, who cooperated on the research with Steven Ward of the University of California. “Although the year-to-year probability of a collapse is therefore low, the resulting tsunami would be a major disaster with indirect effects around the world.”
The effects would spread north, west and south of the Canaries, with the west Sahara bearing the worst of the wave’s energy. The energy released by the collapse would be equal to the electricity consumption of the entire United States in half a year.
Immediately after the landslide（山崩）,a huge wave of water 93,000 feet high and tens of miles wide would form. As the landslide rocks moved deeper under water, a tsunami would develop. Within 10 minutes, the tsunami would have moved a distance of almost 155 miles. On the west Saharan shore, waves would probably reach heights of 330 feet.
Florida and the Caribbean, the final north Atlantic destinations to be affected by the tsunami, would have to brace themselves for 165-foot waves some eight to nine hours after the landslide. Wave heights toward Europe would be smaller, but substantial waves would hit the coasts of Britain, Spain Portugal and France. The research paper estimated water would penetrate several miles inland and that the devastation would cause trillions of dollars in damage.
76. What would be the result of a big chunk rock falling into the sea?
A. Waves would be very high.                                         B. The volcano would stop.
C. Walls of water would kick up a storm.                          D. An earthquake would take place.
77. The word “negligible”(Line 3, Paragraph 2) is closest in meaning to ______.
A. unimportant                    B. small                              C. predictable               D. avoidable
78. From the passage we may learn that the volcano erupts ______.
A. every year                                                                 B. every 5 to 9 years
C. every 10 to 100 years                                                        D. every 5 to 10 months
79. All of the following are true EXCEPT ______.
A future eruption of Cumbre Vieja volcano may experience a massive collapse
Waves generated by the landslide could even reach the coasts of the United States
The landslide-released energy is equal to half a year’s electricity consumption in the US
American scientists have managed to utilize the volcanic energy for civil purposes

D

The eruption of a volcano in the Canary Islands could trigger a “mega-tsunami”（巨大海啸）that would hit Atlantic coastlines with waves as high as 330 feet, scientists said on Wednesday. They said an eruption of the Cumbre Vieja volcano on La Palma, part of the Spanish island chain off West Africa, was likely to cause a massive chunk（大块）of rock to break off, crashing into the sea and kicking up huge walls of water higher than any other in recorded history. The tsunami would be capable of traveling huge distances at up to 500 miles an hour, the scientists said in a research paper to be published soon.

Simon Day, of the Benfield Greig Hazard Research Centre at the University College of London, said that as the volcano was not erupting at present, the short-term and medium-term risks were “negligible”. But Cumbre Vieja should be monitored closely for any signs of activity so that emergency services could plan an effective response, he said. “Eruptions of Cumbre Vieja occur at intervals of decades to a century or so and there may be a number of eruptions before its collapse（倒塌）,” said Day, who cooperated on the research with Steven Ward of the University of California. “Although the year-to-year probability of a collapse is therefore low, the resulting tsunami would be a major disaster with indirect effects around the world.”

The effects would spread north, west and south of the Canaries, with the west Sahara bearing the worst of the wave’s energy. The energy released by the collapse would be equal to the electricity consumption of the entire United States in half a year.

Immediately after the landslide（山崩）,a huge wave of water 93,000 feet high and tens of miles wide would form. As the landslide rocks moved deeper under water, a tsunami would develop. Within 10 minutes, the tsunami would have moved a distance of almost 155 miles. On the west Saharan shore, waves would probably reach heights of 330 feet.

Florida and the Caribbean, the final north Atlantic destinations to be affected by the tsunami, would have to brace themselves for 165-foot waves some eight to nine hours after the landslide. Wave heights toward Europe would be smaller, but substantial waves would hit the coasts of Britain, Spain Portugal and France. The research paper estimated water would penetrate several miles inland and that the devastation would cause trillions of dollars in damage.

76. What would be the result of a big chunk rock falling into the sea?

A. Waves would be very high.                                         B. The volcano would stop.

C. Walls of water would kick up a storm.                          D. An earthquake would take place.

77. The word “negligible”(Line 3, Paragraph 2) is closest in meaning to ______.

A. unimportant                    B. small                              C. predictable               D. avoidable

78. From the passage we may learn that the volcano erupts ______.

A. every year                                                                 B. every 5 to 9 years

C. every 10 to 100 years                                                        D. every 5 to 10 months

79. All of the following are true EXCEPT ______.

A future eruption of Cumbre Vieja volcano may experience a massive collapse

Waves generated by the landslide could even reach the coasts of the United States

The landslide-released energy is equal to half a year’s electricity consumption in the US

American scientists have managed to utilize the volcanic energy for civil purposes

When Harvard was founded in 1636, there were no other colleges in the American colonies, and it would become the model for many of those that followed. When it began requiring applicants to take a test known as the SAT in 1935, Harvard started another trend. Two years ago, after it announced an aggressive new financial-aid policy, it helped push social class to the center of the national debate over higher education and forced two of its main competitors, Stanford and Yale, to follow its lead.

Last week. Harvard began to make another effort to affect higher education in its image, its president, Derek Bok, announced that the college would abandon its early admissions program, which for decades has allowed high school seniors to apply in October and get an answer yes, no or maybe – in December, shortly before the regular deadline for applications.

Harvard officials argue that the program is beneficial to rich students who don't need to compare financial-aid offers from various colleges. After the announcement, many people within education urged other colleges to take a similar step.

"We're thrilled," said Laurie Kobick, a college counselor (顾问) at Thomas Jefferson High School for Science and Technology in Alexandria, Va. "I think it's going to make admissions better in so many different ways. It will indeed go a small way toward leveling the field among applicants. Of course, it will also have an effect on colleges, and the biggest winner will almost certainly be Harvard. a fact that may prevent many other colleges – perhaps all of them – from       following Hazard this time. Because any college that does so will risk losing some of its best applicants."

1.From the first paragraph we can learn that Harvard ____.

A. was the first college in the American colonies  

B. was best known for the SAT

C. was muck better than Stanford and Yale

D. refused to offer financial-aid to applicants

2.By abandoning early admissions program, Harvard wants ____.

A. to attract the public's attention       

B. to influence higher education in its own way

C. to save money spent in attracting students

D. to allow its competitors to admit more students

3.Early admissions program is good for rich students because ____.

A. they have more chances to enter college

B. they can enter college with a lower score

C. they have special right to be admitted into college

D. they have no problem in supporting their studies

4.Why does Laurie Kobick think other colleges may not follow Harvard?

A. Because they think the action will harm high education.

B. Because they are afraid that the action is not practical.

C. Because they may attract fewer top students than he[ore,

D. Because they are afraid the action will damage their reputation.

When Harvard was founded in 1636, there were no other colleges in the American colonies, and it would become the model for many of those that followed. When it began requiring applicants to take a test known as the SAT in 1935, Harvard started another trend. Two years ago, after it announced an aggressive new financial-aid policy, it helped push social class to the center of the national debate over higher education and forced two of its main competitors, Stanford and Yale, to follow its lead.
Last week. Harvard began to make another effort to affect higher education in its image, its president, Derek Bok, announced that the college would abandon its early admissions program, which for decades has allowed high school seniors to apply in October and get an answer yes, no or maybe – in December, shortly before the regular deadline for applications.
Harvard officials argue that the program is beneficial to rich students who don't need to compare financial-aid offers from various colleges. After the announcement, many people within education urged other colleges to take a similar step.
"We're thrilled," said Laurie Kobick, a college counselor (顾问) at Thomas Jefferson High School for Science and Technology in Alexandria, Va. "I think it's going to make admissions better in so many different ways. It will indeed go a small way toward leveling the field among applicants. Of course, it will also have an effect on colleges, and the biggest winner will almost certainly be Harvard. a fact that may prevent many other colleges – perhaps all of them – from       following Hazard this time. Because any college that does so will risk losing some of its best applicants."
【小题1】From the first paragraph we can learn that Harvard ____.