单项选择题

He lost all his money. The only thing he could do was to call his wife for help at this moment.

A．being called
B．to be called
C．calling
D．call
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单项选择题
It was now clear that no such weapons were manufactured and none been found. ()

A. was found
B. were founded
C. has been found
D. have been founded
单项选择题
Ideally, anatomical investigation consists of a combination of descriptive and experimental approaches. Present-day anatomy involves scrutiny of the structure of organ-isms at many levels of observation.()

A. analysis
B. recognition
C. evaluation
D. examination
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