问题 选择题 给下列的算式选择正确的答案。( ) 1. 3 + 5 = ( ) 2. 9 －6 = ( ) 3. 7 + 2 = ( ) 4. 10 －6 = ( ) 5. 4 + 1 =A. three B. nine C. eight D. five E. four 答案 1-5 C A B E D
