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【简答题】非零整数集合Z*和普通的除法运算。 ( )
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【简答题】全体nn实可逆矩阵集合关于矩阵加法和乘法运算,其中n≥2. ( )
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【简答题】dx= ( ) d(ax=b)
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【单选题】Other people have joined __________ in working to protect biodiversity.
A.
environmentalists
B.
environmentalism
C.
environments
D.
environs
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【简答题】xdx= ( ) d(5\(x^2\))
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【简答题】xdx= ( ) d(3\(x^4\)
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【单选题】In formal writing, it would be most appropriate to describe a good response to a group’s fundraising effort as __________.
A.
great
B.
super
C.
phenomenal
D.
tip-top
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【单选题】It is important to learn the symptoms associated __________ sleep deprivation.
A.
to
B.
from
C.
about
D.
with
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【单选题】You are speaking __________ when you say your idea scored points with your boss.
A.
metaphorically
B.
literally
C.
formally
D.
importantly
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【简答题】The teacher developed a math lesson that no one else at the school had tried before; it was truly ( ) .
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