单项选择题

The microscope enables scientists to distinguish a(n) ______ number and variety of bacteria.

A．selected
B．incredible
C．verifiable
D．unavoidable
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单项选择题
The old man ______ the memory of his dead wife.
A．embraced
B．disclosed
C．cherished
D．stored
单项选择题
I promise to look ______ the matter as soon as I get back to the head office.
A．into
B．in
C．for
D．after
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