2019年00596英语阅读（二）自考模拟试题（十）

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2019年00596英语阅读（二）自考模拟试题（十）

Passage Two

In 1998 consumers could purchase virtually anything over the Internet. Books, compact discs, and even stocks were available from World Wide Websites that seemed to spring up almost daily. A few years earlier, some people had predicted that consumers accustomed to shopping in stores would be reluctant to buy things that they could not see or touch in person. For a growing number of time-starved consumers, however, shopping from their home computer was proving to be a convenient alternative to driving to the store.

A research estimated that in 1998 US consumers would purchase $7.3 billion of goods over the Internet, double the 1997 total. Finding a bargain was getting easier, owing to the rise of online auctions and Websites that did comparison shopping on the Internet for the best deal.

For all the consumers’ interest, retailing in cyberspace was still a largely unprofitable business, however, Internet pioneer Amazon. com, which began selling books in 1995 and later branched into recorded music and videos, posted revenue of $153.7 million in the third quarter, up from $37.9 million in the same period of 1997. Overall, however, the company’s loss widened to $45.2 million from $9.6 million, and analysts did not expect the company to turn a profit until 2001. Despite the great loss, Amazon. Com had a stock market value of many billions, reflecting investors’ optimism about the future of the industry.

Internet retailing appealed to investors because it provided an efficient means for reaching millions of consumers without having the cost of operating conventional stores with their armies of salespeople. Selling online carried its own risks, however. With so many companies competing for consumers’ attention, price competition was intense and profit margins were thin or nonexistent. One video retailer sold the hit movie Titanic for $9.99, undercutting the $19.99 suggested retail price and losing about $6 on each copy sold. With Internet retailing still in its initial stage, companies seemed willing to absorb such losses in an attempt to establish a dominant market position. 

Questions 16-20 are based on Passage Two 

16. According to the writer, which of the following is true?

A. Consumers are reluctant to buy things on the Internet.

B. Consumers are too busy to buy things on the Internet.

C. More and more consumers prefer Internet shopping.

D. Internet retailing is a profitable business.

17. Finding a bargain on the Internet was getting easier partly because _____.

A. there were more and more online auctions.

B. there were more and more Internet users.

C. the consumers had more money to spend.

D. there were more goods available on the Internet

18. “For all the consumer interest” (Para. 3) means _____.

A. to the interest of all the consumers

B. for the interest of all the consumers

C. all the consumers are much interested

D. though consumers are very much interested

19. It can be inferred from the passage that Amazon. com ______.

A. is making a profit now

B. will probably make a profit in 2001

C. is a company that sells books only

D. suffers a great loss on the stock market

20. Investors are interested in Internet retailing because _____.

A. selling online involves little risk

B. Internet retailing is in its initial stage

C. they can make huge profits from it

D. it can easily reach millions of consumers 

Passage Three 

The ear is indeed a remarkable mechanism; it is so complicated that its operation is not well-understood. Certainly it is extremely sensitive. At the threshold of audibility, the power requirement is inconceivably tiny. If all the people in the United States were listening simultaneously to a whisper (20 decibels (分贝)), the power received by all their collective eardrums would total only a few millionths of a watt (瓦特) — far less than the power generated by a single flying mosquito.

This aural organ is also remarkable for its ability to distinguish various pitches and other qualities of sound. In the range of frequencies where the ear is most sensitive (between 500 and 4,000 vibrations per second), changes in pitch of only 0.3 percent can be detected. Thus, if a singer trying to reach the octave above middle C (512 vibrations per second) is off-key by only 1.5 vibrations per second, the fault can be detected.

The normal ear can respond to frequencies ranging from 20 to 20,000 vibrations per second. In this range, it is estimated that the ear can distinguish more than half a million separate pure tones; that is, 500,000 differences in frequency or loudness. The range varies somewhat from ear to ear and becomes somewhat shorter for low-intensity sounds. Above the audible range, air vibrations similar to sound are called supersonic vibrations. These may be generated and detected by electrical devices and are useful particularly for depth sounding at sea. The time for the waves to travel from the generator to the bottom of the ocean and back again is measure of the depth of that particular spot. Supersonic vibrations apparently can be heard by some animals — notably bats. It is believed that bats are guided during flight by supersonic sounds (supersonic only to humans) which they emit and which are reflected back to their ears in a kind of natural radar. Humans can tell approximately where a sound comes from because we have two ears, not one. The sound arriving at one ear gives the brain information, which the latter organ interprets to note the direction from which the sound originally came. 

Questions 21-25 are based on Passage Three. 

21. The amount of wattage received by the normal eardrum ____.

A. indicates the amount of electrical energy

B. is extremely sensitive

C. is remarkably long

D. is extraordinarily small

22. A Sound coming from a person’s left side would ____.

A. hit the left ear first

B. hit both ears at the same time

C. pass on to the right side

D. generate electrical devices to the brain

23. All of the following is true EXCEPT that ____.

A. the ear is so complicated that its operation is not fully understood yet

B. the ear is so sensitive that it can distinguish full range of frequencies

C. the ear is remarkable for its ability to tell the differences of various pitches

D. the ear can distinguish more than 500,000 separate pure tones when the frequencies range from 20 to 20,000 vibrations per second

24. The direction of sound can be detected ____.

A. because sound arrives in each ear at different time intervals

B. by the frequency and duration of the sound

C. by the inner ear only

D. by combining kinesthetic and tactile data

25. The best title for this passage is _____.

A. How Ears Tell Directions

B. How Sounds Come to Ears

C. The Ear — An Amazing Part of the Body

D. How Ears Distinguish Pitches

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