手语造句可使用（）的方法。A、手掌的方向 B、省略代词 C、指代 D、借用

导致肺癌发生的最重要危险因素是

A．电离辐射

B．食物中毒

C．汽车尾气

D．吸烟

E．遗传因素

猪口腔黏膜、牙龈、舌面、鼻翼等部位出现水疱，口角线状流涎，体温升高。此时处理应为（）

A.高温化制或深坑掩埋

B.只需将病畜急宰

C.去除骨肉和内脏，其他部分可食

D.肉尸可经后熟过程食用

E.肉、内脏、副产品应高温处理

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.

小题1: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

小题2:The underlined word“it”in the first paragraph probably refers to“     ”

A．an elevator

B．the new research

C．eye contact

D．social status小题3:A person who stands in the back of the lift is probably      

A confident    B shy    C honest

小题4:The conclusion of the research in the passage is          

A. subjective    B．objective    C critical     D doubtful

（）以平硐为主要开拓巷道，是一种最方便、最安全、最经济的开拓方法。但只有在地形有利的情况下，才能发挥其优点，即只有矿床赋存于山岭地区，埋藏在周围平地的地平面以上才能使用。

金具的表面应光滑，无裂纹、伤痕、锈蚀、滑扣等缺陷，锌层不应剥落。