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【单选题】
犬复绦虫的中间宿主主要是( )
A.
蚤类
B.
犬蚤
C.
地螨
D.
鼠类
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举一反三
【单选题】He has never seen the Greens and he knows ______about them.
A.
little
B.
a little
C.
something
D.
anything
【单选题】从一个已知高级水准点出发,沿各待测高程的水准点进行水准测量,然后测到另一已知高级水准点上结束,该水准路线称为( )
A.
闭合水准路线
B.
附合水准路线
C.
支水准路线
D.
结点水准网
【判断题】从一个已知高级水准点出发,沿各待测高程的水准点进行水准测量,最后测到另一已知高级水准点上,该水准路线称为闭合水准路线
A.
正确
B.
错误
【单选题】Little ______ that the police are about to arrest him.
A.
he knows                            
B.
he doesn't know
C.
does he know                          
D.
doesn't he know
【单选题】He knows )____ English but he has _____ English friends. [     ]
A.
few; little
B.
little; few
C.
little; a few
D.
a few; little
【单选题】143从一个已知高级水准点出发,沿各待测高程的水准点进行水准测量,然后测到另一已知高级水准点上结束,该水准路线称为()
A.
闭合水准路线
B.
附合水准路线
C.
支水准路线
D.
结点水准网
【判断题】常系数差分方程所对应的系统一定是线性时不变的
A.
正确
B.
错误
【简答题】He knows about the even (little) ______ than you do.
【单选题】He knows little of English to say ______ of English culture.
A.
something
B.
everything
C.
nothing
D.
anything
【简答题】He knows even ______ (little)about the Olympic s than I do.
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