Today just as technology changed the face of industry, farms have undergone an “agricultural ”.On the farm of today, machines provide almost all the power.

One of the most important benefits will be the farm computer.A few forward-looking farmers are already using computers to help them run their farms more efficiently.The computers help them keep more accurate records so they can make better decisions on what crops to plant, how much livestock to buy, when to sell their products, and how much profit they can expect.Many computer companies have been developing special computer programs just for farmers.Programs are being written for hog producers, grain farmers, potato farmers, and dairy farmers.In the future, farmers will be able to purchase computer programs made to their needs.Because of the growing importance of computers on the farm, students at agricultural colleges are required to take computer classes in addition to their normal agricultural courses.There can be no doubt that farmers will rely on computers even more in the future.While the old-time farm depended on horse power, and modern farms depend on machine power, farms of the future will depend on computer power.

Another technological advance which is still in the experimental stage is the robot, a real “mechanized hired hand” that will be able to move and, in some ways, think like a human being.Agricultural engineers believe that computer-aided robots will make startling changes in farming before the end of the century.Unlike farmers of the present, farmers of the future will find that many day-to-day tasks will be done for them.Scientists are now developing robots that will be able to shear sheep, drive tractors, and harvest fruit.Even complex jobs will be done by robots.For example, in order to milk their cows, farmers must first drive them into the barn, then connect them to the milking machines, watch the machines, and disconnect them when they are finished.In the future, this will all be done by robots.In addition, when the milking is completed, the robots will automatically check to make sure that the milk is pure.The complete mobilization of the farm is far in the future, but engineers expect that some robots will be used before long.

1.Which sentence carries the main idea of the whole passage?
     A.The first sentence of the first paragraph.

     B.The first sentence of the second paragraph.

     C.The first sentence of the third paragraph.

     D.The last sentence of the second paragraph.

2.According to the passage, computers can not help farmers decide _______.

       A.how much money they can earn from their products

       B.whether to plant a certain kind of crop

       C.what livestock to raise

       D.when to sell their products

3.Which of the following statements is true?

       A.Farmers in the future will depend totally on computers.

       B.Both computers and robots have been in use on today’s farms.

       C.Farmers mainly use machines on their farms at present.

       D.Students at agricultural colleges must take computer classes because they can do nothing  without the help of computers on today’s farms.

4.What is the best title for the whole passage?

       A.Computer, Farmers’ Best Friend 

       B.Farmers in The Future

       C.The Agricultural Revolution   

       D.Computers and Robots

Imagine a mass of floating waste is two times the size of the state of Texas.Texas has a land area of more

than 678,000 square kilometers.So it might be difficult to imagine anything twice as big.

All together, this mass of waste flowing in the North Pacific Ocean is known as the Great Pacific Ocean Garbage Patch (太平洋上的垃圾带).It weighs about 3,500,000 tons.The waste includes bags, bottles and containers—plastic products of all kinds.

The eastern part of the Great Pacific Garbage Patch is about 1,600 kilometers west of California.The western part is west of the Hawaiian Islands and east of Japan.The area has been described as a kind of oceanic desert, with light winds and slow moving water currents.The water moves so slow that garbage from all over the world collects there.

In recent years, there have been growing concerns about the floating garbage and its effect on sea creatures and human health.Scientists say thousands of animals get trapped in the floating waste, resulting in death or injury.Even more die from a lack of food or water after swallowing pieces of plastic.The trash can also make animals feel full, lessening their desire to eat or drink.

The floating garbage also can have harmful effects on people.There is an increased threat of infection of disease from polluted waste, and from eating fish that swallowed waste.Divers can also get trapped in the plastic.

Its existence first gained public attention in 1997.That was when racing boat captain and oceanographer Charles Moore and his crew sailed into the garbage while returning from a racing event.Five years earlier,  another oceanographer learned of the rubbish after a shipment of rubber ducks got lost at sea.Many of those toys are now part of the Great Pacific Ocean Garbage Patch.

In August, 2009, a team from the University of California, San Diego became the latest group to travel to it.They were shocked by the amount of waste they saw.They gathered hundreds of sea creatures and water samples to measure the garbage patch’s effect on ocean environment.

1.How did the writer put forward the topic of the text?

       A.By giving an example.                        B.By listing the facts.

       C.By telling a story.                              D.By giving a comparison.

2.What do we know about the Great Pacific Ocean Garbage Patch?

       A.It is made up of various kinds of plastic products.

     B.It is a solid mass of floating waste materials.

       C.It lies 1,600 kilometers east of California.

     D.It caused animals and humans to get lost.

3.In which column of a newspaper can you most probably find the text?

       A.Sports and entertainment.                   B.Media and culture.

       C.Environment and society.                   D.Science and technology.

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余项。

1     Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.

The ridge (隆起) structure on a person's fingers does not change with growth and is not affected by surface injuries.Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original pattern.2    Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take.

Finger-prints can be made very easily with printer's ink.They can be recorded easily. 3      Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case.A suspected man may deny a charge but this may be in vain. 4    When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye.

    5      Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained.

       A.Special techniques are used to "develop" them.

       B.A fingerprint is an impression of the friction ridges of all part of the finger.

       C.It is only when the inner skin is injured that the arrangement will be destroyed.

       D.With special methods, identification can be achieved successfully within a short time.

       E.This is called a latent print.

       F.His finger-prints can prove who he is even if his appearance has been changed by age or accident.

       G.Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable.

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