C) Food was sold fresh and did not get rotten easily.
D) People had effective ways to preserve their food.
13. Who benefited the least from fridges according to the author?
A) Inventors.
B) Consumers.
C) Manufacturers.
D) Traveling salesmen.
14. Which of the following phrases in the fifth paragraph indicates the fridges negative effect on the environment?
A) Hum away continuously.
B) Climatically almost unnecessary.
C) Artificially-cooled space.
D) With mild temperatures.
15. What is the authors overall attitude toward fridges?
A) Neutral.
B) Critical.
C) Objective.
D) Compromising.
Passage Two
Questions 16 to 20 are based on the following passage:
The human brain contains 10 thousand million cells and each of these may have a thousand connections. Such enormous numbers used to discourage us and cause us to dismiss the possibility of making a machine with human-like ability, but now that we have grown used to moving forward at such a pace we can be less sure. Quite soon, in only 10 or 20 years perhaps, we will be able to assemble a machine as complex as the human brain, and if we can we will. It may then take us a long time to render it intelligent by loading in the right software(软件)or by altering the architecture but that too will happen.
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