单项选择题

In 1845 Sarah Mather invented a submarine telescope that could be used to locate and study underwater objects.()

A. illuminate
B. raise
C. find
D. examine

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单项选择题
In order to improve our standard of living, we have to accelerate production().

A. speed up
B. decrease
C. stop
D. control
单项选择题
It is obvious that he will win the game at last.()

A. likely
B. possibly
C. clearly
D. finally
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