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【单选题】
下列基因工程载体元件中哪一个是非必需的A.
复制起始位点
B.
选择标记
C.
标签序列
D.
克隆位点
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皮皮学刷刷变学霸
举一反三
【单选题】I was told that the water of the Ganjiang River is much cleaner than ____ of the Xiangjiang River.
A.
those
B.
one
C.
that
D.
ones
【单选题】The petty cash balance at 30 November 2019 was $25. The following transactions occurred during November 2019: (1)Refreshments were purchased at a cost of $7.25 (2)Travel expenses of $12.75 were reimbu...
A.
$25
B.
$60
C.
$35
D.
$50
【简答题】人与人之间相互交流需要遵循共同的规则,这些规则称作语言,语言有很多种,如汉语、英语、法语、德语等,不论何种人只要说同一种语言就可以交流;计算机之间的相互通信也需要遵守共同的规则,这些规则就称为_____。
【单选题】The Emperor offered to release Valentine on condition that ______.
A.
Valentine stop performing Christian marriage
B.
Valentine get married with the daughter of the prison guard
C.
Valentine do not perform. marriage secretly
D.
Valentine quit his job
【单选题】A cleaner was struck and killed by lightning when working on the tarmac (停机坪) at the Beijing airport at 8 a.m. August 11, 2013. Police said when they found the body he _______ a mobile phone.
A.
was still being held
B.
was still holding
C.
held
D.
had been holding
【简答题】Section B Read the following two passages and fill in the blanks with the given words. 阅读下列文章,在空白处填上合适词汇的选项。 A. But B.Probably C. clearer D. future E. example People like to t...
【单选题】Either Dale or Jerry going to help the cleaner with the rubbish this Sunday afternoon.
A.
is
B.
are
C.
was
D.
were
【简答题】My wife was using the vacuum cleaner. I was trying to listen to a broadcast play.
【简答题】Page 54: Exercise B of the Passage in Part 3 Section Two
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