高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
These technical terms ＿＿＿＿＿ to understand.
A.is found difficult to
B.find to be difficult
C.find difficult
D.are found difficult
These technical terms ＿＿＿＿＿ to understand.
A.is found difficult to
B.find to be difficult
C.find difficult
D.are found difficult
参考答案：
佳题速递：