A-A+
We have been told that the contract in questio
问题详情
We have been told that the contract in question is ______ for one year starting from the fifteenth of June of this year.
A．useful
B．efficient
C．practical
D．effective
参考答案
正确答案：D
解析：useful有用的/efficient有效率的，能干的/practical实用的/effective有效的，例如：When does the new system become effective?新制度何时生效?
