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单选题

A．They could be controlled independently.
B．They were fire resistant.
C．They could keep operating for a longer period of time.
D．They offered more room for passengers.

参考答案A
解析:Other than their speed, in what way were electric trolley car better than cable cars?
细节题。根据They designers of electric trolley came up with the new control system that allowed each part to be powered independently and have its own breaks．what’s safer and more efficient than cable cars．可知除了速度更快，电车还能够独立运行，更加安全更加有效率。因此，正确答案是A。
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单选题

A．It made the subways much quieter.
B．It brought electric light to the tunnels.
C．It allowed passengers to breathe cleaner air in the tunnels.
D．It allowed subways to be repaired inexpensively.

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单选题Questions are based on the following passage.
The American 26 system, is organized around a basically private-enterprise, market-oriented economy in which 27 largely determine what shall be produced by spending their money in the marketplace for those goods and services that they want most. Private businessmen,28 to make profits, produce these goods and services in 29 with other businessmen; and the profit motive, operating under competitive pressures, largely determines how these goods and services are produced.Thus, in the American economic system it is the demand of individual consumers,30 with the desire of businessmen to 31 profits and the desire of individual to maximize their incomes, that together determine what shall be produced and how resources are used to produce it.
An important factor in a market-oriented economy is the 32 by which consumer demands can be expressed and responded to by producers. In the American economy, this mechanism is provided by a price system, a process in which prices rise and fall in 33 to relative demands of consumers and supplies offered by seller-producers. If the product is in 34 supply relative to the demand, the price will be bid up and some consumers will be eliminated from the market. If, on the other hand, producing more of a commodity results in reducing its cost, this will tend to increase the supply offered by seller-producers, which in turn will lower the price and permit more consumers to buy the product. Thus, price is the 35 mechanism in the American economic system.
A. Competition
B. maximize
C. short
D. coupled
E. individual
F. response
G. Eliminated
H. private
I. economic
J. Striving
K. regulating
L. mechanism
M. Consumers
N. political
O. Results
第（26）题选

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