4. How is it treated and prevented?
举一反三
- Paragraph 1（） A: How is cancer treated B: Does cancer always cause pain C: Can cancer be prevented D: What is cancer E: How common is cancer F: What causes cancer
- How can the hold-and-wait condition be prevented?
- How can the circular-wait condition be prevented?
- How was the mouse treated with the AICAR?
- How are elderly people treated in many cultures?