The rich man spent a lot of money on the farm because there was a very old tree.
A. Right.
B. Wrong.
C. Doesn't say.
English people usually ______.
A. don't talk too much
B. go to work by car
C. don't like speaking
It can be inferred from the passage that by 1860 ______.
A. half of the population lived to the west of Appalachian Mountains
B. Americans had long been desirous of new territories
C. westward expansion was a solution to the conflicts between the two parties
D. America's industry was highly developed
在进口付汇核销制中，一份核销单可办理( )次付汇。
A. 1
B. 2
C. 3
D. 无数
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