问题 选择题 选择正确的选项完成下列各题。( ) 1. five + four －__________ = three( ) 2. seven + __________ －six = nine( ) 3. __________ + two －eight = four( ) 4. nine + five －ten = __________( ) 5. six + __________ －two = seven( ) 6. __________ + seven －two = tenA. fourB. sixC. fiveD. eightE. tenF. three 答案 1. B 2. D 3. E 4. A 5. F 6. C
