中国大学MOOC: 3. When you work on computer, the microbes________.A. just stay on our hands B. also stay on the keyboardC. will do harm to youD. will disappear
中国大学MOOC: 3. When you work on computer, the microbes________.A. just stay on our hands B. also stay on the keyboardC. will do harm to youD. will disappear
1