EXERCISE 1 Information Technology1982 was the year of information technology in Great Britain. But what exactly is infotech? 85% of the people _1_ recently had not a clue what it means, _2_53% of those polled said they thought it sounded pretty important.They were _3_.It is.So what is it? Well, put simply,it is the marry-upof products_4_several key industries:computers, telephone, televisions, satellites.It means _5_ microelectronics, telecommunication networks fibre optics_6_produce,store,obtain and send information by way of words,numbers,pictures and sound_7_and efficiency than ever before.The _8_ infotech is having and is going to have on our lives and work is tremendous.It is already linking the skills of the space industry with _9_ of cable television,so programmes can be beamed directly into our homes _10_ all over the world. Armies of steel collarworkers,the robots,will soon be working in factories doing the boring,complex and _11_jobs which are at present still done by man. In some areas _12_the car industry this has already started. television will also be used to enable customers _13_from the comfort of their homes by simply ordering_14_ the TV screen, payment being made by direct debit of their credit cards.The automatic booking of tickets will also be done through the television_15_ .Cable television _16_in many countries now gives a choice of _17_ channels will soon be used to_18_ our homes by operating burglar and fire alarms _19_to police and fire stations.Computers will run our homes,controling the heating,air-conditioned and cooking systems _20_ robot will cope with the housework.the friendly postman will be a thing of the past as the post service and letters disappear with the electronic mail received via viewdata screens. 1) A polling B being polled C polled D having been polled2) A so B although C however D but3) A right B wrong C mad D crazy4) A from B in C to D for5) A to use B to be used C being used D using6) A to help B to helping C to be helped D to being helped7) A very quickly B more quickly C quicklier D most quickly8) A force B affect C impact D control9) A those B that C which D the one10) A from B in C across D thoughtout11) A interesting B dull C unpleasant D happy12) A for example B for instance C like D such as13) A shop B to shop C shopping D to shopping14) A on B via C within D by15) A screen B machine C set D show16) A where B in which C which D it17) A a dozen Bdozen C dozen of D dozens of18) A protect B clean C run D manage19) A related B associated C linked D joined20) A while B because C since D forcbaad abcaacdbba cdacaEXERCISE 2 The Central Problem of EconomicsThe central problem of economics is to satisfy the peoples and nations wants.The problem we faced with is that our resources,here identified as money are _1_.The only way we can solve the problem is to _2_ choices.After looking at our resources,we must examine our list of _3_ and identify the things we need immediately , _4_ we can postpone,and those we cannot afford.As individuals,we face the central problem involved in economics-decideing how to allocate our limited resources to _5_ ourselves with greatest satisfaction of our wants.Nations face _6_ problem. As a countrys population_7_, the need for more goods and services grows correspondingly. Resources necessary to production may increase,but there _8_ are enough resources to satisfy the total desires of a nation.Whether the budget meeting is _9_ in the family living room,in the conference room of the corporation _10_ of directors,or in the chamber of the House of Representatives in Washington,the basic problem still exists.We need to find _11_ of allocating limited resources in order to satisfy unlimited wants.A short time ago,economists _12_ goods into two categories,free and economic.The former.,like air and water,were in _13_ abundance that economists had no concern for them.After all,economists is the _14_ of scarcity and what to do about it.Today many of these free goods are _15_ very expensive to use.Population has made clean air and water _16_ for producers who have to filter their waste products,for consumers who ultimately _17_ the producers extra cost,and _18_ taxpayers who pay for the governments involvement _19_ the environment.In the 1990s,almost all goods are scares.Only by effort and money_20_ obtained in the from people wish.1) A abundant B scarce C limited D unlimited2) A have B do C mak