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【单选题】
对三角形进行５次等精度观测，其真误差（闭合差）为：+4″；-3″；+1″；-2″；+6″，则该组观测值的精度（ ）A.
不相等
B.
相等
C.
最高为+1″
D.
无法比较
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举一反三
【单选题】Would you mind me ___________here? __________.Let me take my bag away.
A.
to sit, Better not
B.
sitting, Better not
C.
to sit, Not at all
D.
sitting , Not at all
【单选题】回答题： Living History at Jamestown Settlement A woman in Native American clothes is sitting in the sun， sewing address form. animal skin， Inside a building， a colonist is a wooden chair， using ve...
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】Doctors strongly recommended that my father ________(take) more exercise regularly instead of sitting still before a computer all day long.
【单选题】When he came back three hours later, they were still ____on the sofa, _____ in conversation.
A.
sitting ; absorbing
B.
sitting ; to absorb
C.
seated ; absorbed
D.
seated ; to be absorbed
【简答题】人工呼吸是抢救（）而心脏仍在跳动的伤员的有效方法，最简单、最有效的方法是（）。
【单选题】—Why are you standing there, Kangkang? —I can't see the blackboard clearly. Two tall boys are sitting ______ me. [ ]
A.
behind
B.
next to
C.
in front of
D.
beside
【单选题】Prisoners demonstrated their attitude to work by______
A.
spending most of their time sitting in a hut
B.
insisting on professional guidance
C.
taking no initiative
D.
working voluntarily and conscientiously
【单选题】All day long， by the side of the road ______， looking at the passing cars and people.
A.
was he sitting
B.
sat he
C.
did he sit
D.
he sat
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