单项选择题

The microscope enables scientists to distinguish an incredible number and variety of bacteri

A． a selectedB. a verifiableC. an unbelievableD. an unavoidable
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单项选择题
Grandpa Wang, a famous painter, spent his life in a tranquil little farming cottage.
A．a lovely
B．a peaceful
C．an isolated
D．a noisy
单项选择题
The team published their report after three-month investigation which triggered off a parliamentary debate.
A．shot
B．delayed
C．started
D．concluded
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