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【单选题】
以下哪种情况容易形成在禁带中形成杂质能带A.
掺入杂质在禁带中形成较深能级
B.
载流子有效质量比较大的半导体
C.
相对介电常数比较大的半导体
D.
禁带宽度比较大的半导体
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举一反三
【单选题】______ that the trade between the two countries reached its highest point.
A.
During the 1980's
B.
That it was in the 1980's
C.
It was in the 1980's
D.
It was the 1980's
【单选题】The word 'shaky' (Line l, Para. 3 ) most probably means'______'.
A.
creative
B.
firm
C.
假
D.
weak
【简答题】请论述在选择中间商的标准中,需要考虑哪些经济性标准?为什么?
【单选题】'...people who die wondering, What if?' ( L3, Para. 3 ) refers to' those______ '.
A.
who think too much of the dark side of life
B.
who regret giving up their career halfway
C.
who think a lot without making a decision
D.
who are full of imagination even upon death
【多选题】关于“中国坚持走和平发展的道路”的说法正确的是( )。
A.
中国坚持走和平发展的道路，是一条统筹国内发展和对外开放的发展道路
B.
中国坚持走和平发展的道路，是基于中国特色社会主义的必然选择
C.
中国坚持走和平发展的道路，是基于当今世界发展潮流的必然选择
D.
中国坚持走和平发展的道路，是要以其他国家的利益为根本出发点
【单选题】The phrase' suited to'(Line l, Para. 3) means______ .
A.
acceptable for
B.
difficult for
C.
fit for
D.
bad for
【简答题】汽车的常规性维护保养分为日常维护保养、 和 。
【单选题】______ that saw the trade between the two countries reach its highest point.
A.
During the 1990's
B.
That it was in the 1990's
C.
It was in the 1990's
D.
It was the 1990's
【单选题】According to the author, the phrase 'learning to use a computer' (Line 4, Para. 3) means learning ______.
A.
a set of rules
B.
the fundamentals of computer science
C.
specific programs
D.
general principles of programming
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