单项选择题

The vocabulary and grammatical difference between British and American English are so trivial and few as hardly ________.

A. noticed
B. to be noticed
C. being noticed
D. to notice
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Just as the soil is a part of the earth, ___________ the atmosphere.
A. as it is
B. the same is
C. so is
D. and so is
单项选择题
When she graduates from the university this summer, Mary ________ here for four years.
A. will be studying
B. will have studied
C. will study
D. studies
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