【文章內容簡介】 The phrase account for in line 18 is closest in meaning to(A) record (B) describe (C) equal (D) explain32. Which of the following best expresses the relationship between the first and second paragraphs? (A) The first paragraph describes a place while the second paragraph describes a field of study.(B) The first paragraph defines the terms that are used in the second paragraph.(C) The second paragraph describes a specific instance of the general topic discussed in the first paragraph. (D) The second paragraph presents information that contrasts with the information given in the first paragraph.33. Where in the passage does the author mentions the variety of fossils found at Holzmaden? (A) Line 8(B) Lines 910 (C) Lines 1415 (D) Lines 1719Questions 3441The Lewis and Clark expedition, sponsored by President Jefferson, was the most important official examination of the high plains and the Northwest before the War of 1812. The President39。s secretary, Captain Meriwether Lewis, had been instructed to explore the Missouri River, and such principal streams of it as, by its course and munication with the waters of the Pacific Ocean …may offer her most direct and practicable water munication across the continent, for the purposes of merce. Captain William Clark, the younger brother of famed George Rogers Clerk, was invited to share the mand of the exploring party.Amid rumors that there were prehistoric mammoths wandering around the unknown region and that somewhere in its wilds was a mountain of rock salt 80 by 45 miles in extent, the two captains set out. The date was May 14, 1804. Their point of departure was the mouth of the Wood River, just across the Mississippi from the entrance of the Missouri River. After toiling up the Missouri all summer, the group wintered near the Mandan villages in the center of what is now North Dakota. Resuming their journey in the spring of 1805, the men worked their way along the Missouri to its source and then crossed the mountains of western Montana and Idaho. Picking up a tributary of the Columbia River, they continued westward until they reached the Pacific Ocean, where they stayed until the following spring.Lewis and Clark brought back much new information, including the knowledge that the continent was wider than originally supposed. More specifically, they learned a good deal about river drainages and mountain barriers. They ended speculation that an easy coasttocoast route existed via the MissouriColumbia River systems, and their reports of the climate, the animals and birds, the trees and plants, and the Indians of the West – though not immediately published – were made available to scientists.34. With what topic is the passage primarily concerned? (A) The river systems of portions of North America.(B) Certain geological features to the North American continent.(C) An exploratory trip sponsored by the United States government. (D) The discovery of natural resources in the United States.35. According to the passage, the primary purpose of finding a water route across the continent was to(A) gain easy access to the gold and other riches of the Northwest(B) bee acquainted with the inhabitants of the West.(C) investigate the possibility of improved farmland in the West. (D) facilitate the movement of merce across the continent36. The river Meriwether Lewis was instructed to explore was the(A) Wood (B) Missouri (C) Columbia (D) Mississippi37. According to the passage, the explorers spent their first winter in what would bee(A) North Dakota(B) Missouri (C) Montana (D) Idaho38. The author states that Lewis and Clark studied all of the following characteristics of the explored territoriesEXCEPT(A) mineral deposits(B) the weather(C) animal life(D) native vegetation39. The phrase Picking up in line 13 could best be replaced by which of the following? (A) Searching for(B) Following(C) Learning about(D) Lifting40. It can be inferred from the passage that prior to the Lewis and Clark expedition the size of the continent had been(A) of little interest(B) underestimated(C) known to native inhabitants of the West(D) unpublished but known to most scientists41. Where in the passage does the author refer to the explorers39。 failure to find an easy passageway to the western part of the continent?(A) Lines12(B) Lines45 (C) Lines911 (D) Lines1214Questions 4250For a century and a half the piano has been one of the most popular solo instruments for Western music. Unlike string and wind instrument, the piano is pletely selfsufficient, as it is able to play both the melody and its acpanying harmony at the same time. For this reason, it became the favorite household instrument of the nineteenth century.The ancestry of the piano can be traced to the early keyboard instruments of the fifteenth and sixteenth centuries – the spinet, the dulcimer, and the virginal. In the seventeenth century the organ, the clavichord, and the harpsichord became the chief instruments of the keyboard group, a supremacy they maintained until the piano supplanted them at the end of the eighteenth century. The clavichord39。s tone was metallic and never powerful。 nevertheless, because of the variety of tone possible to it, many posers found the clavichord a sympathetic instrument for concert use, but the character of the tone could not be varied save by mechanical or structural devices.The piano was perfected in the early eighteenth century by a harpsichord maker in Italy (though musicologists point out several previous instances of the instrument). This instrument was called a piano e forte(soft and loud), to indicate its dynamic versatility。 its strings were struck by a recoiling hammer with a feltpadded head. The wires were much heavier in the earlier instruments. A series of mechanical impr ovements continuing well into the nineteenth century, including the in