托福阅读历年真题精选27_第3页

7. The word "surge" in line 18 is closest in meaning to

(A) sharp increase

(B) sudden stop

(C) important change

(D) excess amount

 

8. The author mentions "wheat and wheat flour" in line 22 in order to

(A) show that Americans exported more agricultural products than they imported.

(B) show the increase in the amount of wheat products exported.

(C) demonstrate the importance of cotton among American export products.

(D) demonstrate that wheat farming was becoming more profitable.

 

9. The word "unprecedented" in line 25 is closest in meaning to

(A) slow

(B) profitable

(C) not seen before

(D) never explained

 

10. According to the passage, the Mississippi River was

(A) one of the boundaries of a region where new agricultural settlement took place

(B) a major source of water for agricultural crops

(C) the primary route by which agricultural crops were transported

(D) a main source of power for most agricultural machinery