【福州市初中毕业班质量检查】
I．根据短文内容，完成下面的句子，每空一词。(每小题2分，共10分)
Oranges were known in China about four thousand years ago. There are two kinds of orange trees, the sweet and the sour (酸的) . At first, people in Europe only had sour oranges. They started to grow them around the ninth century. From the eleventh century, sour oranges were widely grown in southern Europe.
Until the fifteenth century, sweet oranges were brought to Europe by business from the East. They were a kind of rare(稀有的) fruit at that time. Only very rich people could pay for them. They paid a lot of money to get the orange trees. They planted these trees in their gardens.
