单句改错。注意每句只有一处错误。
增加：在缺词处加一个漏词符合（∧）,并在此符合下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线,并在该词下面写出修改后的词。
(1). Yuan Longping grows that is called super hybrid rice.
(2). More than 60% of the rice produced in China each year are from this hybrid strain.
(3). Spending money on himself or lead a comfortable life also means very little to him.
(4). He feels being famous gives him fewer freedom to do his research.
(5). Using the rice, farmers are producing harvests twice as larger as before.