S1: Venice is a strange and beautiful city in the north of Italy. P : There are about four hundred old stone bridges joining the island of Venice. Q : In this city there are no motor cars, no horses, no buses. R : These small islands are near one another. S : It is not an island but a hundred and seventeen islands. S6: This is because Venice has no streets. The Proper sequence should be:
S1: We now know that the oceans are very deep. P : For example, the Indian ocean has a range called the Indian Ridge. Q : Much of it is fairly flat. R : However, there are great mountain ranges as well. S : On average the bottom is 2.5 miles to 3.5 miles down. S6: This reaches from the India to the Antarctic. The Proper sequence should be:
S1: Our ancestors thought that anything which moved itself was alive. P : The philosopher Descartes thought that both men and animals were machines. Q : But a machine such as a motorcar or a steamship moves itself, as soon as machines which moved themselves had been made, people asked "Is man a machine?" R : And before the days of machinery that was a good definition. S : He also thought that the human machine was partly controlled by the soul action on a certain part of the brain, while animals had no souls. S6: Therefore some scientists think that life is just a very complicated mechanism. The Proper sequence should be:
S1: For decades, American society has been calling a melting pot. P : Differences remained - in appearence, mannerisms, customs, speech, religion and more. Q : The term has long been a cliche and half-truth. R : But homogenisation was never acheived. S : Yes, immigrants from diverse cultures and traditions did cast off vestiges of their native lands and become almost imperceptibly woven in to the American fabric. S6: In recent years, such differences accentuated by the arrival of immigrants from Asia and other parts of the world in the United States - have become something to celebrate and to nurture. The Proper sequence should be:
S1: The heart is pump of life. P : They have even succeeded in heart transplants. Q : Nowadays surgeons are able to stop a patients heart and carry out complicated operations. R : A few years ago it was impossible to operate on a patient whose heart was not working properly. S : If heart stops we die in about five minutes. S6: All this was made possible by the invention of heart-lung machine. The Proper sequence should be: A.