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单选题. It was going to have roughly the effect of a neutron bomb attack on high streets and shopping malls. The buildings would be left standing but the people would vanish. Such was the superior efficiency of selling things via the Internet that brick-and-mortar stores would be unable to compete on price, choice or even service. Book and music sellers had already been "Amazoned". Soon web-based "category-killers", in everything from toys to pet supplies, would overwhelm their physical-world competitors. Shoppers would never be more than a mouse-click from the best deals. Traditional retailers, terrified of cannibalizing (同类相食) sales and destroying the value of their expensive properties, were already too late to meet the challenge. "In some categories," said Mary Meeker, a seer (预言家) of the Internet at Morgan Stanley, "it's already game over." These are convenient beliefs for anyone justifying some e-commerce share prices, but they are already mostly wrong. The reasons should surprise no one. The Internet is not a dominant technology but rather a network of people. It is a rich and highly flexible means of communicating that is rapidly achieving pervasiveness because more and more people find it easy and convenient to use. But it is those people's preferences that will count; and for most people, shopping is more than just a means to an end. Even if the Internet provided a perfectly efficient way to shop it would not provide a satisfactory alternative to the physical enjoyment of sniffing a ripe melon, say, or trying on a cashmere sweater. Of course, some products, such as music and banking, can be distributed electronically with success and cost saving. But most purchases cannot be reduced to digital code. And distributing physical goods is cumbersome (笨重的) and expensive. Behind even the most exciting user interface there are old-fashioned warehouses and lorries, customers who decline to sit at home waiting for purchases to arrive, and goods that must be re-wrapped and expensively returned. No wonder that the cost of getting goods to customers' homes so often soaks up the notional price advantages of e-commerce. What Internet shoppers have quickly realized is that the web is an addition to, and not a substitute for, their shopping habits. It is wonderful for gathering up-to-date information about products and prices. Cyber Dialogue, a research firm, estimates that in 1998 23m Americans sought information online, but then made their purchases offline, compared with only 17.7m who did the whole thing online.1. The author compares ______ of the online sale to the effect of neutron bomb attack.

单选题. Questions 5 to 8 are based on the conversation you have just beard.5.

单选题Questions 1 to 5 are based on the following passage.Scientists have long known a fairly reliable way to extend life span in rodents and other lab animals: Reduce the amount of calories they eat by 10

单选题. Questions 12 to 15 are based on the passage you have just heard.4.

单选题 In spite of the ______ economic forecast

单选题. Questions 9 to 11 are based on the passage you have just heard.1.

单选题. Questions 23 to 25 are based on the recording you have just heard.8.

单选题39. We are doing this work in the ______ of reforms in the economic, social and cultural spheres.

单选题 Weight lifting

单选题26. There are ______ periods in an animal's life when it is capable of learning a great deal in a very short time.

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单选题36. Various efforts have been made over the centuries to predict earthquakes, including observing lights in the sky and ______ animal behavior.

单选题. Questions 19 to 21 are based on the recording you have just heard.4.

单选题Questions 1 to 5 are based on the following passage.Using Facebook makes people sadder, at least according to some research.But just what is it about the social network that takes a hit on our mood? A

单选题The Dodge BrothersAIt was 100 years ago this week that the Dodge brothers founded the powerful car brand that still bears their name.But few have heard the tale of how the two-fisted brothers started

单选题A Class ApartAHoused in a jumble of ancient buildings in the shadow of Westminster Abbey, Westminster School has been educating boys since it was founded in 1560 by Queen Elizabeth I to provide lesson

单选题. Questions 5 to 8 are based on the conversation you have just heard.5.