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【单选题】
The growth rate of real GDP per person in the United States hasA.
averaged approximately 2 percent per year over the past century.
B.
has consistently been 2 percent per decade over the past century.
C.
has been the highest in the world over the past 5 decades.
D.
has increased every year over the past century.
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【单选题】The _________ of the internet has made the parents very cautious, for they are afraid that their children will be distracted by some improper pictures and videos while having an online class.
A.
complex.
B.
complicated.
C.
complexity.
D.
compromise.
【简答题】Innovation, the elixir ( 灵丹妙药 ) of progress, has always cost people their jobs. In the Industrial Revolution hand weavers were 36 aside by the mechanical loom. Over the past 30 years the digital revol...
【简答题】The class has made ____ improvement.
【简答题】In recent decades, the black middle class has grown _______ and made great strides. (substance)
【单选题】The monitor has made _______ the class meeting will not be postponed.
A.
clear
B.
clear that
C.
it clear that
D.
that clear
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