An instruction is made up of (41) that specify 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 (42) two numbers, it must know (43) the two numbers are. The processor’s job is to (44) instructions and operands from memory and to perform each operation. Having done that, it signals (45) to send it next instruction.

A．hard disk

B．register

C．memory

D．cache

读“某区域示意图”，回答下面问题：

下列四幅气候资料图与M地的气候特点最相符的是（）

A.A

B.B

C.C

D.D