问题 选择题 算一算，选一选。( ) 1. sixteen ÷ two =( ) 2. fifteen + three =( ) 3. five × four =( ) 4. two × six =( ) 5. four + seven =A. 20B. 18C. 11D. 12E. 8 答案 1. E 2. B 3. A 4. D 5. C
