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【单选题】
设 为常数,函数 在 处的增量满足 则 在 处( ) 。A.
连续，不一定可微
B.
可微且
C.
可微且
D.
可微且
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举一反三
【简答题】Scotland to Robert Burns is the birth place of _______, and the country of _________.
【单选题】Robert Burns is remembered mainly for his songs written in the ______ dialect on a variety of subjects.
A.
England
B.
Welsh
C.
Scottish
D.
Irish
【单选题】Robert Burns is the best known of the poets who have written in the ( ) dialect.
A.
I rish
B.
Scottish
C.
London
D.
C eltic
【单选题】(2013·山东济南二模)The poem A Red, Red Rose written by Robert Burns is popular with the Chinese young people, because the poem is easy ________.
A.
to be understood
B.
to understand
C.
understand
D.
understanding
【简答题】所谓高级消费,主要是就旅游消费水平和 而言
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