Question

兩個奇數(shù)的和一定是（　�。�，兩個偶數(shù)的和一定是（　�。�，一個奇數(shù)與一個偶數(shù)的和一定是（　�。�

A．奇數(shù)

B．偶數(shù)

C．質(zhì)數(shù)

D．合數(shù)

Answer 1

分析：根據(jù)偶數(shù)與奇數(shù)的性質(zhì)：奇數(shù)+奇數(shù)=偶數(shù)，偶數(shù)+偶數(shù)=偶數(shù)，奇數(shù)+偶數(shù)=奇數(shù)．據(jù)此解答．

解答：解：奇數(shù)+奇數(shù)=偶數(shù)，偶數(shù)+偶數(shù)=偶數(shù)，奇數(shù)+偶數(shù)=奇數(shù)．
答：兩個奇數(shù)的和一定是偶數(shù)，兩個偶數(shù)的和一定是偶數(shù)，一個奇數(shù)與一個偶數(shù)的和一定是奇數(shù)．
故選：B、B、A

點評：此題考查的目的是掌握偶數(shù)與奇數(shù)的性質(zhì)．