问题 选择题 算一算，选一选。( ) 1. Nine plus ten. ( ) 2. Twenty minus six. ( ) 3. Eighteen minus eight.( ) 4. Twelve plus four. ( ) 5. Eleven plus six. A. ten B. seventeen C. nineteen D. fourteen E. sixteen 答案 1. C 2. D 3. A 4. E 5. B
