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【单选题】
病毒物理颗粒计数方法测定的是（）A.
有活力的病毒数量
B.
无活力的病毒数量
C.
致病性的病毒数量
D.
有活力的病毒数量与无活力的病毒数量总和
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举一反三
【单选题】Hi, Mike. I have _____ to tell you. [ ]
A.
important something
B.
something important
C.
anything important
D.
important anything
【判断题】Something important has come up.This sentence means something important happens unexpectedly.
A.
正确
B.
错误
【单选题】I have _____ to tell you. [ ]
A.
important something
B.
important anything
C.
something important
D.
anything important
【多选题】关于脊髓的血液供应情况的描述，哪些是正确的（）
A.
脊髓前动脉供应脊髓横截面的前2/3区域
B.
脊髓后动脉供应脊髓横截面的前1／3区域
C.
根动脉的平均数量为7～10条，但是也有可能少至5条，多达17条
D.
脊髓后动脉、根后动脉和冠动脉分布于灰质后角的表浅部、白质后索和侧索的浅表部分
E.
脊髓前动脉和根前动脉分布于前角、中央管周围灰质和后角的前半部，白质前索、侧索深部
【单选题】What did the father do when the baby screamed that word at the airport?
A.
He corrected the baby.
B.
He tried to stop the baby.
C.
He hid himself somewhere.
【判断题】Something important has come up. This sentence means something important happens unexpectedly.
A.
正确
B.
错误
【单选题】According to the passage, when did the word ' ice-box' become part of the American language?
A.
In 1803．
B.
Around 1850.
C.
During the Civil War.
D.
Before 1880.
【单选题】When did the word “entrepreneur” first appear?
A.
In 1723
B.
In 1975
C.
In the French dictionary
D.
In 1997
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