Đọc và khoanh vào câu trả lời đùng nhất: A computer is an electronic (1) ______ , which executes software programs. It consists (2) ______ 2 parts hardware and (3) ______ . The computer processes input through input devices like mouse and keyboarD. The computer displays output through output devices like color monitor and printer. The size of a computer varies considerably from very (4) ______ to very big. The speed of computers also has a very large range. Computers have become indispensable in today’s world. (5) ______ of people use computers all over the world. 1. A. device B. computer C. monitor D. form 2. A. for B. with C. of D. about 3. A. mouse B. keyboard C. screen D. software 4. A. slim B. small C. large D. heavy 5. A. Millions B. Thousand C. Hundred D. None