托福考试

【分析解答题】Questions 20-29The NativeAmerican people of Oregon transported themselves and their goods onfoot, by canoe, by raft, by dog, and by horse.Each tribe used a combination of methods,choosing the mode of transportation best suited to the terrain, the type of load, and the desired speeD、Since each band and local group had a different pattern of settlement and easonal movement, the mixture of transportation methods differed from group to groupand from season to season.Long-distance travel by foot was common all over Oregon. In rougher parts of theinland valleys area and in eastern Oregon prior to the arrival of the horse (first introducedto the area some 300 years ago), it was the principal mode of long-distance travel. Foottrails wound across most mountain passes and were important in maintaining the vastNativeAmerican trading network. Leather moccasins andCute sandals were worn for longhikes and for protection against cold, rather than for everyday use. In winter, snowshoeswere used for hunting expeditions, ID、the Klamath area, where lakes were well stockedwith waterfowl and plant products, NativeAmericans used mudshoes (built similarly to snowshoes) to keep from sinking in the muD、Canoes and rafts were osed by NativeAmericans in all parts of Oregon, although theywere not a major method of travel in eastern Oregon. The boat* were used on lakes andrivers for fishing, gathering water plants, bird hunting, and travel. NativeAmericans fromOregon occasionally ventured to sea for seal hunts, but long sea voyages were much lesscommon than they were further north among the Nootka, Kwakiutl, and Halda people.The use of canoes along theColumbia River contributed to the development of trading and continued, communication among neighboring tribes. Most Oregon canoes were made by hollowing logs. The wooden dugout was uniquely suited to western Oregon’s plentiful supplyof timber. The canoes were expertly carved in a variety of shapes and sizes toensure a smooth and quiet voyage even in rough waters. The word "ensure" in tine 25 is closest in meaning to
A、guarantee
B．decrease
C．convince
D． continue

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