单项选择题

The White brothers______ the design of the first successful motor-powered plane.

A．confronted
B．concealed
C．converted
D．conceived
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单项选择题
I'd like John to have the job, but if he doesn't accept it, we' II have to______ a less experienced man.
A．fall back on
B．resort to
C．tam on
D．look up to
单项选择题
The teacher made strenuous efforts to read the faint,______ handwriting in his students' exercise books.
A．illegal
B．illiterate
C．illegible
D．illustrative
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