题目

下列溶液中有关物质的量浓度关系正确的是 A．25℃时pH=12的NaOH溶液与pH=12的氨水中： c(Na+)=c(NH4+)B．Na2CO3和NaHCO3混合溶液中一定有：      2c(CO32-)+c(OH-)+c(HCO3-)=c(H+)+c(Na+)C．pH=4的0.1mol·L-1的NaHA溶液中：c(HA-)＞c(H+)＞c(H2A)＞c(A2-)D．将①pH=2的CH3COOH溶液、②pH=2的盐酸、③0.01mol/L的氨水、④0.01mol/L的NaOH溶液，分别稀释100倍后溶液中的c(H+)：②>①>④>③ After 17 years of marriage, my wife wanted me to take another woman out to dinner and a movie. She said, “I love you, but I know this other woman loves you and would love to spend some     36   with you.”The other woman that my wife wanted me to visit was my MOTHER, who has been     37  for 20 years, but the demands of my work and my boys made it possible to visit her only     38   .Then I called to visit her to go out for dinner and a movie. When I arrived at her house, I noticed that she had curled her    39  and was wearing a nice dress. My mother took my arm     40   she were the First Lady.During the dinner, we had an agreeable    41 —nothing extraordinary but catching up on recent events of each other’s life. We talked so much that we missed the movie. At last, she said,” I’ll go out with you again, but only if you let me invite you.” I    42  .Two days later, my mother died of a massive heart attack. It happened so suddenly that I didn’t have a    43   to do anything for her.Later, I received a copy of a restaurant receipt from the place mother and I had dined. A(n)    44   note said, “I paid this bill in advance. I wasn’t sure that I could be there; but nevertheless, I paid for two plates—one for you and the other for your wife. You will never know what that night     45   for me. I love you, son.”At that moment, I understood the importance of saying in time “I LOVE YOU” and giving our loved ones the time that they     46   . Nothing in life is more important than your family. Give them the time they deserve, because these things cannot be     47  till “some other time”.小题1:A．timeB．moneyC．dinnerD．movie小题2:A．upsetB．cheerfulC．aloneD．excited小题3:A．usuallyB．occasionallyC．frequentlyD．often小题4:A．programB．combC．organD．hair小题5:A．as ifB．even thoughC．such asD．as to小题6:A．discussionB．quarrelC．conversationD．fight小题7:A．refusedB．wonderedC．orderedD．agreed小题8:A．luckB．chanceC．willD．hope小题9:A．connectedB．attachedC．abandonedD．deserted小题10:A．caredB．arrangedC．meantD．applied小题11:A．spendB．wantC．needD．deserve小题12:A．put offB．paid offC．put forwardD．looked forward