【单选题】My uncle has just _______abroad. He won’t come back this month.
【单选题】My uncle the club in 2010. He t he club for over 3 years.
A.
joined; has been a member of
C.
has joined; has joined
D.
has joined; has been in
【单选题】My uncle has never been to a foreign country, ( )?
【单选题】My uncle _____ the Party in 1986. He _____ for over 20 years. [ ]
A.
joined, has been a Party member
B.
joined, has joined the Party
C.
has joined, has joined the Party
D.
has joined, has been in the Party
【单选题】My uncle has never been to Beijing, __________?
【判断题】知识产权的时间性是实现知识产权利益平衡的一种制度安排。
【多选题】集输体系对原油处理工艺包括哪些关键环节( )