单项选择题

Up to now, the work has been easy.()

A. So
B. So long
C. So that
D. So far

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单项选择题
The great change of the city astonished all the visitors．
A．surprised
B．scared
C．excited
D．moved
单项选择题
Professor Taylor's talk has indicated that science has a very strong influence on the everyday life of non-scientists as well as scientists.()

A. motivation
B. perspective
C. impression
D. impact
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