题目

下列实验操作能达到目的或实验结果分析正确的是（ ）A.测定溶液的pH时，如果先将pH试纸用水润湿，测定结果一定偏大B.除去KCl固体中少量的MnO2，可加足量水溶解，过滤，洗涤，干燥C.只用一种试剂即可鉴别K2CO3、NaOH、Ba（NO3）2、NaC1四种白色固体D.为制备Fe（OH）3，可将Fe2（SO4）3溶液和适量的Ba（OH）2溶液混合，过滤 Your English teacher has introduced a play to your class. Read the play.Characters: Benny, student, 14 years oldPeter, students, 15 years oldSusie, student, 14 years oldGrace, student, 14 years oldTime: One Sunday afternoon in autumnPlace: Sunny Park(The four teenagers have just finished the picnic. They are tidying up.)Benny: Wow! That was a great picnic. I'm so full that I can hardly move.Grace: That's no excuse for not tidying up, Benny. Come over here and help me pack up the leftover food. Peter, can you put out the fire, please? And clean up the plate.Peter: (Speaking unhappily to himself) How can I always get the dirty and difficult jobs? It's not fair.(Peter throws a bit of water on the fire. Then he picks up the ashes (灰烬) with an old newspaper and wants to throw them into the long grass.)Susie: (Sounding surprised) What are you doing, Peter? That's d…Peter: Whoops…the newspaper has caught fire.Susie: And the grass…Benny, Grace, help! Help!(Benny and Grace come over quickly. They help put out the fire completely.)Peter: Oh, no. What have I done?Grace: You know that we should do everything carefully, don't you?Peter: (With his head in his hands) Yes. What have I done? What have I done?【1】How does Peter feel about his job?A.Dirty and difficultB.Clean an easyC.Great and interestingD.Noisy and harmful【2】What word do you think Susie would say in the sentence "That's d…"?A.dirtyB.difficultC.dangerousD.delicious【3】Which of the following sentences is true?A.There are five people in the play.B.Benny refuses to help others tidy up.C.They have a picnic in the morningD.Peter's carelessness causes the fire.