When hollowed out and used as a drinking-cup, the unicorn's horn was said to have the power to offer protection against poison. It was believed that nobody could be harmed----by drinking the contents of a unicorn's horn. Right up until the French Revolution in 1789, the French court was said to have used cups made of "unicorn" horn in order to protect the king. In addition, the horn was said to have medicinal value, so much so that it could be sold for more than ten times the price of the same weight of gold. What, then, was "unicorn" horn? We know at times the rhino(犀牛) was confused with this legendary creature. A drinking-cup supposedly made of "unicorn" horn was discovered to be made of the horn of a rhino.

　1. Which of the following is TRUE of the unicorn?

A. It was not historically recorded

B. Its horn was first used in France

C. It was similar to the Indian Ass and the Oryx

D. It could be the symbol of a university

2. To catch a unicorn, the unicorn-trappers had to try all of the following EXCEPT ____.

A. tempting the unicorn to attack

B. making use of the tree as a protection

C. hiding quickly behind the unicorn

D. having the unicorn horn stuck in the tree

3. The last paragraph is mainly about ____.

A. the properties of the unicorn horn

B. the users of the unicorn horn

C. the price of the unicorn horn

D. the comparison between the unicorn horn and the rhino horn

4. In the last paragraph, the word "unicorn" is in quotation marks because _____.