题目

How can I fight laziness? Lazy people will never amount to anything in life. However, laziness can be defeated once a few changes have been made in your mind.      16    . Many people lack sleep constantly, since they stay up too late and get up too early to prepare for work. These people have little motivation once they arrive home. Laziness works hand in hand with a lack of motivation and a tendency to put off things. By adjusting your sleep schedule to provide a few more hours of meaningful rest, you can fight laziness throughout the day. Another way to fight laziness is to从某些性质看，NH3与H2O相当，NH4+与H3O+、NH2－与OH－、NH2－与O2－都有相当关系，下列有关方程式不正确的是（　 ）A．NH4Cl+KNH2=KCl+2NH3↑　B．M+2NH3=M(NH2)2+H2↑（M为二价活泼金属）C．2HCl+ M(NH2)2 =MCl2+2NH3↑D．2NH4Cl+MO=M(NH2)2+2HCl+H2O