Most people know that awkward feeling when you walk into an elevator with other people and try not to make eye contact(接触). But a new research suggests it may be down to a subconscious power struggle being played out as you make your way up and down.
A study found that people decide where they stand based on a micro social status，established within seconds of entering the lift.
Rebekah Rousi．a Ph. D．student in cognitive(认知)science，conducted an ethnographic(人种论)
Study of elevator behaviour in two of the tallest office buildings in Adelaide，Australia.As part of her research，she took a total of 30 lift rides in the two buildings，and discovered .There was an established order to where people tended to stand
In a blog she writes that more senior men seemed to direct themselves towards the back of the elevator She said：“In front of them were younger men，and in front of them were women of aII ages.”She also notice there
was a difference in where people directed their gaze(注视)half way through the ride．“Men watched the monitors，looked in the side mirrors(in one building)to see themseIves．And in the door mirrors(of the other building)to also watch others Women would watch the monitors and avoid eye contact with other users(unless in conversation)and the mirrors，”she writes．
She concluded it could be that people who are shyer stand toward the front，where they can’t see other passengers，whereas confident people stand in the back，where they have a  view of everyone else.
The passage is mainly about      
A. elevator riding manners   
B communication in the elevator
C. elevator riders’ standing positions 
D. micro social status in the elevator
The underlined word“it”in the first paragraph probably refers to“     ”

A．an elevator

B．the new research

C．eye contact

D．social status

A person who stands in the back of the lift is probably      
A confident    B shy    C honest
The conclusion of the research in the passage is          
A. subjective    B．objective    C critical     D doubtful