题目

下列有关化学用语的表示正确的是A. NH4Cl的电子式： B. 钾离子结构示意图：C. 醋酸的分子式：CH3COOH D. 原子核内有8个中子的碳原子： 答案：【答案】B【解析】A.NH4Cl的电子式：，故A错误；B.钾是19号元素，钾离子结构示意图：，故B正确；C.醋酸的分子式为C2H4O2，故C错误；D.原子核内有8个中子的碳原子：，故D错误。故选B。 (2013·高考辽宁卷)A little girl lived in a simple and poor house on a hill.Usually she ____ play in the small garden.She could see over the garden fence and across the valley a wonderful house with shining golden windows high on another hill.____ she loved her parents and her family，she desired to live in such a house and ____ all day about how wonderful and exciting ____ must feel to live there.At the age when she gained some ____ skill and sensibility(识别力)，she ____ her mother for a bike ride ____ the garden.Her mother finally allowed her to go，____ her keeping close to the house and not ____ too far.The day was beautiful.The little girl knew ____ where she was heading！____ the hill and across the valley，she rode to the ____ of the golden house.____ she got off her bike and put it against the gate post，she focused on the path ____ to the house and then on the house itself.She was very disappointed when she ____ that all the windows were ____ and rather dirty.So ___ and heart­broken，she didn’t go any further.She ____，and all of a sudden she saw an amazing ____.There on the other side of the valley was a little house and its windows were golden.Looking at her little home，she ____ that she had been living in her golden house filled with love and care.Everything she dreamed was right there in front of her nose!小题1:A．mightB．shouldC．wouldD．must小题2:A．UnlessB．AlthoughC．SinceD．But小题3:A．dreamedB．worriedC．askedD．shouted小题4:A．thisB．that C．itD．which小题5:A．differentB．scientificC．musicalD．basic小题6:A．beggedB．blamedC．invitedD．paid小题7:A．insideB．outsideC．throughD．along小题8:A．insisting onB．relying onC．arguing aboutD．wondering about小题9:A．travelingB．runningC．ridingD．walking小题10:A．madlyB．rapidlyC．exactlyD．possibly小题11:A．OverB．DownC．AroundD．Beside小题12:A．windowsB．stepsC．centerD．gate小题13:A．UntilB．AsC．WhileD．Because小题14:A．gettingB．introducingC．leadingD．moving小题15:A．feltB．learnedC．concludedD．found小题16:A．transparentB．brightC．plainD．wide小题17:A．anxiousB．angryC．seriousD．sad小题18:A．turned aroundB．cheered upC．settled downD．dropped in小题19:A．hillB．valleyC．backgroundD．sight小题20:A．imaginedB．decidedC．realizedD．guessed