题目

某溶液中含有较大量的Cl－、CO32－、OH－3种阴离子，如果只取一次该溶液就能分别将3种阴离子依次检验出来，下列实验操作顺序（滴加的试剂均过量）正确的是（） ①滴加Mg(NO3)2溶液； ②过滤； ③滴加AgNO3溶液； ④滴加Ba(NO3)2溶液 A . ①②④②③ B . ①②③②④ C . ④②①②③ D . ④②③②① 答案：C完形填空My husband Jack hated Christmas. He didn’t hate the true meaning of ___16___, but the commercial aspects of it. Knowing he felt this ______17___, I decided one year to___18___the usual shirts, sweaters, ties and so on. I reached for something _____19__just for Jack. The idea came in an unusual way.　　 Our son Kevin, who was 12 that year, was______20______at the junior level at the school he attended and shortly before Christmas, there was a non-league match____21_____a team sponsored by a church.　　 These youngsters from the church, dressed in shoes so_______22_____that shoestrings seemed to be the only thing holding them together,____23______our son’s team were in their beautiful new wrestling shoes.　　 As the match began, I was_____24_____to see that the other team was wrestling without a helmet designed to____25_____a wrestler’s head. They clearly could not_____26_____ them. Well, our son’s team ended up defeating them and took every weight class. But as the other team ______27_____up from the mat, they walked around with a sense of pride that couldn’t admit______28______.　　 Jack, seated beside me, shook his head_____29_____, “I wish just one of them could have won,” he said. “They have a lot of potential, but______30_____like this could take the heart right out of them.” Jack loved_____31_____and he knew them, having coached little league football, baseball. That’s when the ____32______for his present came. That afternoon, I went to a local sporting goods store and _____33______some wrestling helmets and shoes and sent them to the church.　　 On Christmas Eve, I placed the envelope on the tree, the note inside telling Jack what I had done and that this was his_______34_____from me. His smile was the_______35______ thing about Christmas that year.小题1:A．the giftB．an envelopeC．the wrestlingD．Christmas小题2:A．wayB．joyC．musicD．fear小题3:A．buyB．wearC．avoidD．give小题4:A．beautifulB．expensiveC．newD．special小题5:A．wrestlingB．weightliftingC．shootingD．boxing小题6:A．atB．againstC．forD．on小题7:A．bigB．smallC．wornD．cheap小题8:A．becauseB．ifC．whileD．so小题9:A．frightenedB．disappointedC．pleasedD．surprised小题10:A．coverB．surroundC．hideD．protect小题11:A．carryB．affordC．designD．expect小题12:A．dressedB．gotC．turnedD．cheered小题13:A．defeatB．evidenceC．chargeD．mistake小题14:A．gentlyB．sadlyC．nervouslyD．gladly小题15:A．runningB．winningC．losingD．shaking小题16:A．workmatesB．parentsC．friendsD．kids小题17:A．invitationB．careC．ideaD．money小题18:A．returnB．soldC．boughtD．left小题19:A．giftB．warningC．praiseD．love小题20:A．brightestB．funniestC．ugliestD．darkest