What does the passage mainly discuss? A. The history of railroads in the United States

Câu hỏi :

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

A. The history of railroads in the United States

B. The major United States industrial centers

C. Factors that affected industrialization in the United State

D. The role of agriculture in the nineteenth century

* Đáp án

* Hướng dẫn giải

Đáp án là C

Các factors có thể kể đến trong bài: the application of technical expertise, organizational skill, and laborthe growth of the railroads..., machine tools, the tools

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