Read again. Answer each question. Circle Yes, No, or Doesn't say

(Đọc lại đoạn văn một lần nữa. Trả lời mỗi câu hỏi. Khoanh tròn Yes, No hoặc Doesn’t say

1. Is sleep good for our health? Yes No Doesn't say

2. Do we study and work better with eight hours of sleep? Yes No Doesn't say

3. Do Americans sleep less than people of other nationalities? Yes No Don’t say

4. Does the movement of the sun affect our natural clock? Yes No Doesn't say

5. Does blue light affect our sleep? Yes No Doesn't say

6. Should we check our phones before we sleep? Yes No Doesn't say

7. Does the writer think we will take the advice of medical experts? Yes No Doesn’t say