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【单选题】
默认情况下管理员创建了一个用户,就会在()目录下创建一个用户主目A.
/usr
B.
/home
C.
/root
D.
/etc
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举一反三
【单选题】Great changes ___________ in my hometown over the years. A. take place B. have taken place C. is taking place D. taked place
A.
take place
B.
have taken place
C.
is taking place
D.
taked place
【单选题】关于电场线以下说法错误 的是 ( )
A.
电场线起于正电荷，至于负电荷或无穷远处
B.
电场线的疏密能定量描述电场的大小
C.
任意两条 电场线永不相交
D.
电场线中间不间断
【单选题】What kind of problem can be solved by the new technology?
A.
It can help mankind solve the problem of planting tomatoes.
B.
It can help mankind solve the problem of watering.
C.
It can help. mankind solve the problem of salt.
D.
It can help mankind solve the problem of feeding its population.
【单选题】Can you tell me the best way _____ the problem? [ ]
A.
solve
B.
solved
C.
to solve
D.
solving
【单选题】Peace and development remain the permanent themes of our times, _____ the world we live in is anything but quiet. [ ]
A.
and
B.
if
C.
so
D.
but
【简答题】1876-1878年,恩格斯写出了( ),全面阐述了马克思主义理论体系。
【单选题】Only in this way ______ solve the problem.
A.
can you
B.
you can
C.
you will
D.
will you able to
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