问题
选择题
The revolutionary system of farming, said the Israeli government spokesman, was one_____ he believed could change the face of modern agriculture.
A．that
B．how
C．/
D．what
答案
答案：A
考查定语从句。句中the one指代the Israeli government spokesman，故the one为先行词，在定语从句中作主语，he believed作插入语，故用关系词that。选A。