41. What is the passage mainly about?
(A) Methods of farming used by early settlers of the United States
(B) Hardships faced by the early settlers of the United States
(C) Methods of buying, selling, and trading used by early settlers of the United States
(D) Ways in which early settlers of the United States relaxed

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統計： A(1), B(3), C(0), D(8), E(0) #803340