• A. Kripke’s research tool
• B. Dangers of habitual shortages of sleep
• C. Criticism on Kripke’s report
• D. A way of overcoming insomnia
• E. Sleep problems of long and short sleepers
• F. Classification of sleep problems

Paragraph 6 ______.

A．Medics own the freedom of speech.
B．Posting should be encouraged, as it can make doctors reflect.
C．It should be forbidden, as it violates patients’ confidentiality.
D．Medics need to be very careful about any information they post onlin

A．Right
B．Wrong
C．Not mentioned