问题补充:
They came to the conclusion by a computer.
A. that not all things can be done
B. because of not all things be done
C. being not all things can be done
D. because not all things can be done
答案:
(答案→)A. that not all things can be done
B. because of not all things be done
C. being not all things can be done
D. because not all things can be done
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