江苏省南通市2014
高考英语阅读理解、短文改错训练（4）（答案或解析） bananas are one of the world’ s most important food crops. they are also one of the most valuable exports. bananas do not grow from seeds. instead, they grow from existing plants. bananas are threatened by disease because all the plants on a farm are copies of each other. they all share the same genetic weaknesses. for example, the cavendish banana is most popular in north american and european markets. however，some kinds of
