[单选题]Despite differences in conversational style, speakers are helped by automatic patterns in daily interactions such as "Hi". "Hi", known as_______
A.adjacency pairs
B.preference structure
C.dispreference structure
D.insertion sequence

[单选题]The conversational implication of "John is a machine" as a response to "What do you think of John" is context-bound. It possesses all the following distinguishing properties but _______ .
A.non-detachability
B.calculability
C.conventionality
D.defeasibility

[不定项选择题]共用题干 The Differences Among Various Types of Adoption

In the US,there is a difference between public and private adoption.Public adoption typically involves taking _________ (51) foster（收养的）children and then adopting them after several months.It's significantly less expensive than private or international adoption,but more often than not_______(52)adopting children who are older than 5 or who have_______(53)needs.
Private adoptions offer a better chance of adopting newborns,and increasingly,birth parents _______(54)the adoptive parents themselves.That's not a bad idea on its face,as it gives biological parents_______ (55)say in whom they will relinquish（放弃）their children. But this effectively puts_______(56)parents in the position of advertising themselves to birth parents in newspapers and online,_______(57)many couples feel uncomfortable with.
Most states allow birth parents to reclaim their children_______(58)the children have been placed with adoptive families,for time periods ranging from a few days in some states to several months in others.Critics of international adoption say this rarely happens.They are only_______ (59)right:it's true that American birth parents don't usually reclaim their children once they've been placed with their adoptive families,but they can and do_______(60)their minds before the papers are signed.
International adoption is more expensive than any form of domestic adoption,but in many ways, it is also more straightforward.The_______(61)of a birth parent calling the adoption_______ (62)are effectively zero and while costs are high,they're also determined at the_______(63) and tend not to change as the_______(64)wears on.
Couples seeking to adopt should consider all_______(65)and get a range of perspectives before deciding which method is best for them. _________(59)
A.partly
B.justly
C.basically
D.accidentally