2. 计算机
  3. Software products may be (1)into four basic types: application programs, programming language processors, operating systems, and

Software products may be (1)into four basic types: application programs, programming language processors, operating systems, and

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问题 Software products may be (1)into four basic types: application programs, programming language processors, operating systems, and system utilities.
   Application programs are programs that (2) useful tasks such as solving statistical problems, or keeping your company’s books.
   Programming language processors are programs that (3) the use if a computer language in a computer system. They are tools for the development of application programs.
   Operation systems are programs that (4) the system resources and enable you to run application programs.
   System utilities are special programs that (5) the usefulness of or add capabilities to a computer.
选项 A、manage
B、perform
C、support
D、reduce
E、divided
答案B
解析
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