PASSAGE 1 The Invention of the telephone ?In the nineteenth century, the invention of the telegraph made it possible to send noises, signals, and even...
PASSAGE 3 The White House ?We got up early this morning and __1__ a long walk after breakfast. We walked through the business section of the city. I t...
PASSAGE 6 Let's Have a Little Cooperation Please ?Cia Andina do Triconos (CATSA), a Bolivian joint venture of the U.S. Dresser Industries and loca...
PASSAGE 4 Cost as a Factor in Supply ?In a purely competitive market, the supplier of goods and services has no control over the market price, because...
PASSAGE 8 An Absent-minded Professor ?Professor Smith lived alone. He was very absent-minded. He used to __1__ the university to give a lecture and fi...
PASSAGE 13 The Central Problem of EconomicsThe central problem of economics is to satisfy the people's and nation's wants.The problem we are f...
PASSAGE 11 The Great Newspaper WarUp until about 100 years ago, newspapers in the United States appealed only to the most serious readers. They used _...
PASSAGE 15 Racial PrejudiceIn some countries where racial prejudice is acute, violence has been taken for granted as a means of solving differences; a...
PASSAGE 17 The American FamilyIn the American family the husband and wife usually share important decision making. When the children are old enough, t...
PASSAGE 20 Singing Alarms Could Save the BlindIf you cannot see, you may not be able to find your way out of a burning building-and that could be fata...