题目内容
When railroads began drying up the ______ for steamboat pilots and the Civil War halted commerce ...
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Attacks on the city government, concerning such issues as ______ of Chinese, so angered officials that he fled to the goldfields ...
"It was that population that gave to California a name for getting up astounding enterprises ... and a recklessness of cost or ______ ..."
In New York City the steamship Quaker City prepared to sail on a ______ cruise to Europe and the Holy Land.
Twain was assigned to accompany them, as ______ for a California newspaper.
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