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【正文】 s agriculture importance (B) Philadelphia39。s art may also reflect the culture39。 their prospects for patronage in their own country were uncertain, and they sought to attract it by attaining academic recognition in New York. One of the results of the conflict between the two factions was that what in previous years had been referred to as the American, native, or, occasionally, New York school — the most representative school of American art in any genre — had by 1890 bee firmly established in the minds of critics and public alike as the Hudson River school. The sobriquet was first applied around 1879. While it was not intended as flattering, it was hardly inappropriate. The Academicians at whom it was aimed had worked and socialized in New York, the Hudson39。 surfaces as soft as the breasts of birds. Moreover, the Pomo people made use of more weaving techniques than did their neighbors. Most groups made all their basketwork by twining — the twisting of a flexible horizontal material, called a weft, around stiffer vertical strands of material, the warp. Others depended primarily on coiling — a process in which a continuous coil of stiff material is held in the desired shape with tight wrapping of flexible strands. Only the Pomo people used both processes with equal ease and frequency. In addition, they made use of four distinct variations on the basic twining process, often employing more than one of them in a single article. Although a wide variety of materials was available, the Pomo people used only a few. The warp was always made of willow, and the most monly used weft was sedge root, a woody fiber that could easily be separated into strands no thicker than a thread. For color, the Pomo people used the bark of redbud for their twined work and dyed bullrush root for black in coiled work. Though other materials were sometimes used, these four were the staples in their finest basketry. If the basketry materials used by the Pomo people were limited, the designs were amazingly varied. Every Pomo basketmaker knew how to produce from fifteen to twenty distinct patterns that could be bined in a number of different ways. 1. What best distinguished Pomo baskets from baskets of other groups? (A) The range of sizes, shapes, and designs (B) The unusual geometric (C) The absence of decoration (D) The rare materials used 2. The word fashion in line 2 is closest in meaning to (A) maintain (B) anize (C) trade (D) create 3. The Pomo people used each of the following materials to decorate baskets EXCEPT (A) shells (B) feathers (C) leaves (D) bark 4. What is the author39。s surface is dominated by the particular properties of water. Present on Earth in solid, liquid, and gaseous states, water is exceptionally reactive. It dissolves, transports, and precipitates many chemical pounds and is constantly modifying the face of the Earth. Evaporated from the oceans, water vapor forms clouds, some of which are transported by wind over the continents. Condensation from the clouds provides the essential agent of continental erosion: rain. Precipitated onto the ground, the water trickles down to form brooks, streams, and rivers, constituting what are called the hydrographic work. This immense polarized work channels the water toward a single receptacle: an ocean. Gravity dominates this entire step in the cycle because water tends to minimize its potential energy by running from high altitudes toward the reference point, that is, sea level. The rate at which a molecule of water passes though the cycle is not random but is a measure of the relative size of the various reservoirs. If we define residence time as the average time for a water molecule to pass through one of the three reservoirs — atmosphere, continent, and ocean — we see that the times are very different. A water molecule stays, on average, eleven days in the atmosphere, one hundred years on a continent and forty thousand years in the ocean. This last figure shows the importance of the ocean as the principal reservoir of the hydrosphere but also the rapidity of water transport on the continents. A vast chemical separation process takes places during the flow of water over the continents. Soluble ions such as calcium, sodium, potassium, and some magnesium are dissolved and transported. Insoluble ions such as aluminum, iron, and silicon stay where they are and form the thin, fertile skin of soil on which vegetation can grow. Sometimes soils are destroyed and transported mechanically during flooding. The erosion of the continents thus results from two closely linked and interdependent processes, chemical erosion and mechanical erosion. Their respective interactions and efficiency depend on different factors. 1. The word modifying in line 4 is closest in meaning to (A) changing (B) traveling (C) describing (D) destroying 2. The word which in line 5 refers to (A) clouds (B) oceans (C) continents (D) pounds 3. According to the passage , clouds are primarily formed by water (A) precipitating onto the ground (B) changing from a solid to a liquid state (C) evaporating from the oceans (D) being carried by wind 4. The passage suggests that the purpose of the hydrographic work (line 8) is to (A) determine the size of molecules of water (B) prevent soil erosion caused by flooding (C) move water from the Earth39。s diet before the invention of the icebox 5. The word it in line 5 refers to (A) fresh meat (B) the Civil War (C) ice (D) a refrigerator 6. According to the passage , which of the following was an obstacle to the development of the icebox? (A) Competition among the owners of refrigerated freight cars (B) The lack of a work for the distribution of ice (C) The use of insufficient insulation