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【判断题】
用户与硬件系统之间的软件系统通常可以分为系统软件和应用软件。()A.
正确
B.
错误
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【简答题】The disrupted natural ecosystem has led to ______ of some species and put a lot of species in er.
【单选题】Researchers conducted breeding studies with two species of mice. Species A was monogamous, while Species B was not.Supporters of the competing parental interest theory hypothesized that the monogamous...
A.
When females from Species A were bred with males from Species B, the resulting offspring were extremely small.
B.
When females from Species A were bred with males from Species B, the resulting offspring were extremely large.
C.
When females from Species B were bred with males from Species A, the resulting offspring were extremely large.
D.
The offspring of Species B mice were consistently smaller than the off-spring of Species A mice.
【单选题】What is the lifespan of a species connected to?
A.
The lifespan of a species is connected to the speed at which the heart beats.
B.
The lifespan of a species is connected to the size of the species.
C.
The lifespan of a species is connected to the speed at which the species runs.
【单选题】I have( )three terrible English examinations this week.
A.
observed
B.
operated
C.
undergone
D.
suffered
【简答题】species，strain
【单选题】Rarely ______ such a terrible sight.
A.
I have seen
B.
have I seen
C.
I saw
D.
had I seen
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