The following factors tend to promote social change except ______.
A. different kinds of people
B. different points of view
C. different interests
D. different conditions
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The major problems with America's railroad system in the mid 19th century lay in ______.
A. limited railroad lines
B. lack of a transcontinental railroad
C. lack of financial support of development
D. poor quality rails and unreliable stopping systems
Woman: Oh, this chicken soup is spoiled. Man: Maybe we ought to tell the waiter about it.
A. He wants to pay the bill.
B. He wants to complain about the soup to the waiter.
C. He thinks the chicken soup is very delicious.
D. He shouldn't eat any chicken soup.
The building of the first transcontinental system ______.
A. relieved the burden of overall railroad system
B. encouraged people to rush for gold in the west
C. attracted many visitors to the construction sites
D. brought about a rapid growth of industry and farming in the west
In the fourth paragraph, the author implies that imagination is most important to scientists when they ______.
A. gather known facts
B. formulate possible solutions to a problem
C. evaluate previous work on a problem
D. close an investigation
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