单项选择题

Why can't doctors convince the sufferers that there is nothing wrong

A．Because they fail to offer enough evidence.
B．Because they don't assure them of that.
C．Because the sufferers are deaf and cannot hear what the doctors say.
D．Because lack of absolute guarantee makes them doubtful.
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单项选择题
Which of the following best summarizes the main idea of the passage
A．Hypochondria happens to everybody sooner or later.
B．We needn't worry about hypochondria since it is not dangerous at all.
C．Hypochondria originates from too much knowledge of medicine.
D．Not only individuals but also the healthcare system might be disturbed by the unnecessary terrors.
单项选择题
The problem becomes worse due to ________.
A．the increasing number of patients
B．the widespread medical knowledge on the Internet
C．the fact that they visit the doctors frequently and occupy too much time
D．new diseases and symptoms emerge constantly
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