单项选择题

Questions 11 to 13 are based on the following talk on hygiene. You now have 15 seconds to read Questions 11 to 13. What is the talk mainly about

A．Good reading skills.
B．Diseases related to eyes.
C．Health guides for students.
D．Proper eye-use in reading.
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单项选择题
What is said about the best distance between a book and our eyes when reading
A．It is 14 inches.
B．It is hard to figure out.
C．It varies from person to person.
D．It depends on lighting conditions.
单项选择题
What would happen if you misuse your eyes
A．You may feel uncomfortable in various ways.
B．You may have to wear glasses.
C．You can let your eyes rest for a while.
D．You can go and see a doctor.,
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