自然数的倒数都是真分数.______.(判断对错)
自然数包括1,1的倒数是1,所以自然数的倒数都是真分数,错误;
故答案为:错误.
He has forgotten what ______ are involved and the time taken ______ delivery. ( )
A.formalities, in
B.procedures, for
C.formalities, for
D.procedures, in
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