【文章內(nèi)容簡(jiǎn)介】 tizens concerned (D) when some concerned citizens did a diamond is heated without oxygen, it will turn to graphite, a form of____ that it is used as a lubricant. (A) carbon is so soft (B) is carbon so soft (C) carbon so soft (D) so soft the carbon 16. Gold or silver bullion serve into merce as mediums of exchange all over the world. A B C D 17. Today’s farmers have increased milk production greatly through improved methods of breeding, A B C feeding, and manage dairy cattle. D 18. Hypoglycemia is a condition in which a rapidly drop in blood sugar most often results from A B C an oversecretion of insulin from the pancreas. D 19. Newborn infants show a distinct preference for human voices over other sounds and also prefer A B 8 her own mothers’ voices to the voices of strangers. C D 20. The Chippewa and Santee Sioux of the Upper Mississippi River regional have used catlinite to A B produce carvings for almost 150 years. C D 21. Absolutely nothing that floats, neither a corked bottle nor a 50,000ton ships, can escape A B C D the effects of water currents. 22. The Wright Brothers were owner of a bicycle shop, and they used a number of bicycle parts to A B make the original motorized airplane. C D 23. Gemstones are usually bright, color opaque or transparent minerals found in the rocks of A B C D the Earth. 24. The modern detective story in which a detective solves a crime by discovering and interpretation A B C evidence, is considered to have originated with Edgar Allan Poe39。s The Murders in the Rue Mue. D 25. The superintendent of women nurse for the Union Army during the Civil War was Dorothea Dix. A B C D 26. Slow growth in the early 1900’s, liked with rising unemployment, less spend, and meager A B C business investments, led many experts to declare a recession. D 27. Orchestrating musical works requires a understanding of the range and characteristics of A B C each instrument. D 28. The Canadian province of British Columbia is rich of minerals and, because over 50 percent A of the land is covered with forests, lumbering is its major industry. B C D 29. Each major styles of architecture emerged because new problems in building or challenges A B in design appeared for architects to resolve. C D 30. Much of the significant research related for the theory of numbers concerns the A B C distribution of prime numbers. D 31. Lauren Bacall made her film debut in To Have and Have Not, starring together Humphrey Bogart, A B C who later became her husband. D 32. The black leopard is very dark that its spots are difficult to see. A B C D 33. On steep hillsides, tree roots bind to soil that might otherwise be washed away it heavy rains. 9 A B C D 34. Carson McCullers was only 23 when she published her first novel, The Heurt is a Lonely Hunter, A B for what she received much acclaim. C D 35. Through the process of imprinting, the young of a species rapidly learn to recognize and A B follow other members of own species. C D 36. The invention of fresh metaphors today continues to make it possible the vivid A B C expression of emotions. D 37. Proteins are made up of long, folded irregularly chains, the links of which are amino acids. A B C D 38. Although most species of small birds gather in groups at feeders provided by birdwatchers, A the bright red adrenals usually appears alone or with its mate. B C D 39. The astronomy is the oldest science, but it continues to be at the forefront of A B C D scientific thought. 40. Henry David Thoreau was an American writer who is remembered for his faith in the A B C religious significance of the nature. D Section Three: Reading Comprehension Questions 110 Before the mid186039。s, the impact of the railroads in the United States was limited, in the sense that the tracks ended at the Missouri River, approximately the centers of the country. At that point the trains turned their freight, mail, and passengers over to steamboats, wagons, and stagecoaches. This meant that wagon freighting, stagecoaching (5) and steamboating did not e to an end when the first train appeared。 rather they became supplements or feeders. Each new endoftrack became a center for animal d