It is commonly accepted in American society that too much sleep is ______.

A．3)is the result of ______.A. the traditional misconception have about sleepB. the new sleep policy of the Clinton AdministrationC. the rapid development of American industryD. the Americans' worry about the danger of sleepness

A．warn us of the wickedness of napping
B．explain the danger of sleepiness
C．discuss the side effects of napping
D．convince the reader of the necessity of napping