Why is pulp and paper production important to Canada? Why was tee plant hemp essential to world-wide trade in the past?

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问题 Why is pulp and paper production important to Canada?
Why was tee plant hemp essential to world-wide trade in the past?

选项 A、Ships’ ropes were made from it.
B、Hemp was a very profitable export.
C、Hemp was used as fuel for ships.
D、Hemp was used as food for sailors.

答案A

解析 细节考查题。原文第二段第三句话"For centuries, it was essential to the economies of many countries because it was used to make the ropes and cables used on sailing ships",几个世纪以来,它对许多国家的经济来说举足轻重是因为它可以用来制造缆绳,所以答案是A。答案B麻是利润丰厚的出口产品、C麻可以制成船用燃料、D麻可以作水手的食物等在原文中未提及。
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