填空题

Modes of Transportation   There are a variety of means for transportation. Usually, the choice of transportation depends on the (1) ___________ of goods (1) ________ and the points of distribution. There are five major means of transportation: railroads, airplanes, ships, trucks, and pipelines. Often, goods may be transported by a combination of (2) _______________ (2) _________ Railroads are best adapted to the transportation of (3)_________________ products that are low in value in relation to their (3) _________ weight. Truck lines are effective for transporting high-value goods short distances. With the (4) _______ , trucks can reach (4) _________ almost every destination without (5) _________ goods. Air freight (5) _________ used to be a means to speed (6) ___________ or expensive but light (6) _________ products, but this changed with the introduction of (7) ___________ (7) _________ Transportation by waterways is characterized by low cost and low speed. A new development is the use of (8) ________ ships. (8) _________   Pipelines are a special form of transportation mainly used to move gasoline, crude oil and (9) ___________ , but they can also (9) _________ move (10) ____________ like coal.   (10) _________

【参考答案】

nature