An instruction is made up of operations that (68) the function to be performed and operands that represent the data to be operated on. For example, if an instruction is to perform the operation of (69) two numbers, it must know (70) the two numbers are. The processor’s job is to (71) instructions and operands from memory and to perform each operation. Having done that, it signals memory to send it (72) instruction.

A．add

B．added

C．adding

D．additional

车辆出险后车主要求到某专业维修厂进行修理，但是保险公司认为该修理厂价格较高，没有达成一致，什么情况下车主可以自己选择修理厂修理？