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    A. lower B. higher C. more D. mueh 【查看更多】

     

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    阅读理解

    阅读下列短文，从每题所给的四个选项中选出最佳选项。

    　　A shop wholly run by a robot has been set up in downtown Tokyo, capital of Japan. The shop was set up by a Japan-based company.

    　　When a customer comes to the shop, he will be given a pencil and a piece of paper. When he is looking at the shelves for goods, he can write down the number of each thing he wants to buy. Then he may come to a machine, which looks like a bank ATM (Automatic Teller Machine), and press the buttons to tell the machine the numbers and some other information about the goods. The machine will soon give the customer a bill. When the customer puts money into the machine, change will be given back at once, and the words“Thank You for Coming”will appear on the screen of the machine. The robot will select the ordered goods for the customer according to computer center information.

    　　The robot, as round as a bucket, is able to decide the weight and size of any goods. It wilt always take the bigger and heavier goods first before picking up the smaller and lighter ones such as cakes or biscuits. Within half a minute, the robot will make everything ready, and wait for a customer at a certain delivery place.

    　　The shop is to meet the needs of the public for the so-called“silent purchase (购买)”. It means that a customer can do shopping through mail or even an international computer network without facing the shop owner. This will reduce the cost on the part of the shop, and thus lower the price of goods for the customer.

    　　The robot now can deal with most goods in a fast and easy way. Only when dealing with those goods needing special care will the robot ask for help.

    1．When you want to buy something in the robot shop, first you have to _____.

    [　　]

    A．put money into the machine

    B．press the buttons of the machine and tell it what you want to buy

    C．find out what you want to buy and write down the numbers on paper

    D．go into the shop and select the goods you want with the help of the machine

    2．In this shop, the robot can do shopping quickly at a lower price, so _____.

    [　　]

    A．the shop has a great future

    B．customers often get false goods

    C．few customers go there to buy goods

    D．the shop will close down soon

    3．What would be the best title for the text?

    [　　]

    A．May I Help you　　　　　　B．Welcome to Our Shop

    C．Robot Shop　　　　　　　　D．Nobody Sells Goods in the Shop

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    New technologies have made ________ possible to turn out new products faster and at a lower cost．

    [　　]

    A．that

    B．this

    C．one

    D．it

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    ________ the course very difficult, she decided to move to a lower level．

    [　　]

    A．Find

    B．Finding

    C．To find

    D．Found

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    阅读理解

    　　“The world's oceans are slowly getting more acidic(酸性的)．”say scientists．The researchers from California report that the change is taking place in response to higher levels of carbon dioxide in the atmosphere．

    　　The lowering of the waters' pH value is not great at the moment but could cause a serious threat to current ocean life if it continues, they warn．Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature．Increasing use of oil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater．Once in the water, it reacts to form carbonic acid．Scientists believe that the oceans have already become slightly more acidic over the last century．

    　　These researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change．“This level of acidity will get much more extreme in the future if we continue releasing CO2 into the atmosphere,”said Dr Caldeira．“And we predict the amount of future acidity will exceed(超过)anything we have seen over the last several hundred million years, let alone perhaps after rare disastrous events such as asteroid(小行星)impacts．

    　　However, it is not absolutely clear what that means for ocean life．Most organisms(有机体)live near the surface, where the greatest pH change would be expected to occur, but deep-ocean life forms may be more sensitive to pH changes．Coral reefs(珊瑚礁)and other organisms whose shells contain calcium carbonate(碳酸钙)may be particularly affected if the water's acidity levels keep going up, the team predict．They could find it much more difficult to build these structures in water with a lower pH．

    　　In recent years some people have suggested storing carbon dioxide from power station in the deep ocean as a way of dealing with global warming．But Dr Caldeira said that such a strategy should now be re-considered．“Previously, most experts had looked at ocean absorption of carbon dioxide as a good thing－because in releasing CO2 into the atmosphere we warm the planet, and when CO2 is absorbed by the ocean, it reduces the amount of greenhouse warming．”

    (1)

    The ocean is becoming more acidic due to ________．

    [　　]

    A．

    the increasing use of oil fuels

    B．

    the higher level of CO2 in the air

    C．

    the warming atmosphere

    D．

    the lower water pH value

    (2)

    According to Dr Caldeira, ________．

    [　　]

    A．

    more oil fuels will be used in the near future

    B．

    ocean absorption of carbon dioxide is a good thing

    C．

    scientists may predict climate changes with computer models

    D．

    the future situation of the amount of acidity is extremely serious

    (3)

    If the water's acidity level keeps rising, ________．

    [　　]

    A．

    ocean life whose structures contain calcium carbonate may be affected

    B．

    some disastrous events will occur more often than before

    C．

    organisms living near the surface are more sensitive to pH changes

    D．

    the waters' pH value will become higher and higher

    (4)

    Most experts once believed storing carbon dioxide in the ocean would reduce ________．

    [　　]

    A．

    the CO2 absorbed by the ocean

    B．

    the amount of greenhouse warming

    C．

    the acidity of the ocean

    D．

    the gradual release of CO2

    (5)

    The purpose of this passage is to ________．

    [　　]

    A．

    show people the findings of a research team

    B．

    warn people of the higher level of CO2

    C．

    introduce Dr Caldeira and his team's research

    D．

    inform people of how acid the ocean is now

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    The Internet has led to a huge increase in credit－card (信用卡) fraud. Your card information could even be for sale in an illegal web site（非法网站）.

    　 Web sites offering cheap goods and services should be regarded with care.

    　 On－line shoppers who enter their credit－card information may never receive the goods they thought they bought. The thieves then go shopping with your card number—or sell the information over the Internet. Computers hackers (黑客) have broken down security（安全）systems, raising questions about the safety of cardholder information. Several months ago, 25,000 customers of CD Universe, an on－line music retailer (零售商) , were not lucky. Their names, addresses and credit－card numbers were posted on a Web site after the retailer refused to pay US $157,828 to get back the information.?

    　 Credit－card firms are now fighting against on－line fraud. MasterCard is working on plans for Web－only credit card, with a lower credit limit. The card could be used only for shopping on－line. However, there are a few simple steps you can take to keep from being cheated (欺骗).?

    　 Ask about your credit－card firm’s on－line rules: Under British law, cardholders have to pay the first US $78 of any fraudulent (欺骗性的) spending.

    　 And shop only at secure sites; Send your credit－card information only if the Web site offers advanced secure system.?

    　 If the security is in place, a letter will appear in the bottom right－hand corner of your screen. The Web site address may also start https: // － the extra “s” stands for secure. If in doubt, give your credit－card information over the telephone.

    　　Keep your password（密码）safe: Most on－line sites require a user name and password before placing an order. Treat your passwords with care.? 

    1.What is the meaning of “fraud”??

    A. Cheating. 　　　B. Sale. 　　　　C. Payment. 　　　D. Safety.? 　

    2. How can the thieves get the information of the credit card??

    A. The customers give them the information.?

    B. The thieves steal the information from Web sites.?

    C. The customers sell the information to them.?

    D. The thieves buy the information from credit card firms.? 　　

    3.How many pieces of advice does the passage give to you??

    A. Four. 　　　　　B. Three. 　　　　C. Five. 　　　　D. Six.

    4. You are shopping on the site: http: // www. Shopping. com, and you want to buy a TV set, what does this article suggest to do??

    A. Order the TV set at once. ?　

    B. Do not buy the TV set on this site.?

    C. E－mail the site your credit－card information.?

    D. Tell the site your password and buy the TV set for you.?

     

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