单项选择题

While doing calculation for the project, the designers ______ a new solution to a geological problem.

A. fell into
B. stumbled upon
C. set out
D. discovered
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单项选择题
Having been discussed, the proposal was ______ unanimously.
A. adapted
B. adopted
C. admitted
D. adjoined
单项选择题
Everything ______ into consideration, I propose that the first prize should be given to Liu Qiang.
A. to take
B. taking
C. taken
D. took
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