题目

a+b+c=+（+ ），这是加法结合律． 答案：【1】a【2】b【3】c Something caught my eyes when I was walking down the street. Two silver coins were shining in a melting( 溶化的）snow bank, so I dug through the snow looking for more. Of course, I just ended up with really cold hands. I put the two________ into my pocket and went home, colder but richer. I began to think about how to spend the money.Two days later, Mary and her little sister Sue were ________ the snow banks. "Finders are keepers" was my rst thought. I didn't want to hand them out even though Sue was already_________. "I dropped them right here，"she said between tears. Her hands were cold and red for digging in the snow. "Maybe they slid（滑落） down the street with the melting snow. Let's dig over there." Mary's ________ sounded condent."They'll never know" was my second thought，and I walked past them. "Phil，have you seen two silver coins?" asked Mary. Sue looked up from digging. Her eyes were__________."Tell a lie" was my third thought. "As a matter of fact " I hesitated ( 犹豫），"I dug two coins out of that snow bank just a few days ago. I_________who might have lost them. " Sue hugged me with a big smile, "Oh, thank you, thank you. "Wealth got through dishonest means（方法，手段） does not bring happiness. If you get your money by taking advantage of others or by______ others, you will not be happy with it. You will think you are a base person.Many people think that when they become rich and successful, happiness will_________follow. Let me tell you that nothing is further from the truth. Now I feel happy and satised.【1】A.coinsB.billsC.checksD.notes【2】A.watchingB.cleaningC.searchingD.making【3】A.worryingB.cryingC.excitingD.shouting【4】A.voiceB.talkC.speechD.reason【5】A.thankfulB.hopefulC.carelessD.fearless【6】A.imaginedB.expectedC.wonderedD.remembered【7】A.shamingB.forcingC.controllingD.hurting【8】A.graduallyB.quietlyC.actuallyD.naturally