单项选择题

A．Doctors thought that the human body lives in a stable state.
B．The science of chronobiology is sparking a medical revolution.
C．More people die of heart attacks on mornings than on evenings.
D．Chronobiology helps us improve our health and survive.
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单项选择题
What was the attitude of doctors towards weight training in health improvement
A．Positive.
B．Indifferent.
C．Negative.
D．Cautious.
单项选择题
A．She doesn’’t think painting the wall is necessary.B．She wants their walls to be painted in a darker color.C．She wants their walls to be painted in a lighter color.D．She doesn’’t like white color.
A．She doesn’’t think painting the wall is necessary.
B．She wants their walls to be painted in a darker color.
C．She wants their walls to be painted in a lighter color.
D．She doesn’’t like white color.
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