题目

不是Fe（OH）3胶体和MgCl2溶液共同具备的性质是（   ） A . 都比较稳定，密封放置不产生沉淀 B . 都有丁达尔现象 C . 加入少量NaOH溶液都可产生沉淀 D . 分散质微粒均可透过滤纸 答案：BIt was Thanksgiving morning. In the crowded kitchen of my small home I was busy preparing the traditional Thanksgiving turkey1the doorbell rang. I opened the front door and saw two small children in rags huddling together inside the storm door on the top step.“Any old2, lady?” asked one of themI was3. I wanted to say “no” until I looked down at their feet. They were wearing thin scandals(便鞋), wet with heavy snow.“Come in and I’114you a cup of hot cocoa.”There was no conversation. Their wet scandals5marks upon the floor. I6them cocoa and bread with jam to fight against the cold outside. Then I went back to the7and started again on my household budget.The silence in the front room struck through to me. I8in. The girl held the empty cup in her hands, looking at it. The boy asked9a flat voice, “Lady, are you rich?”“Am I rich? Mercy, no!”I looked at my shabby(寒酸的) slipcovers. The girl put her10back in its saucer(茶碟) carefully and said.“Your cups match your saucers.”Her11was hungry with a need that no amount of food could supply. They left then, holding their bundles of papers against the wind. They hadn’t said “Thank you”. They didn’t12to. They had done13that. Plain blue pottery cups and saucers were only worth five pence.14they matched.I15the potatoes and stirred the meat soup. Potatoes and brown meat soup, a roof over our heads, my man with a good steady job—these things16, too.I moved the chairs back from the fire and cleaned the living room. The muddy prints of small scandals were still17upon my floor. Let18be for a while. I want them there19I forget again how20I am.1.A.whileB.asC.whenD.until2.A.clothesB.booksC.shoesD.papers3.A.busyB.confusedC.impatientD.free4.A.cookB.makeC.doD.give5.A.leftB.keptC.heldD.wiped6.A.sentB.tookC.servedD.showed7.A.studyB.bedroomC.living roomD.kitchen8.A.turnedB.gaveC.lookedD.checked9.A.atB.inC.withD.to10.A.foodB.spoonC.toastD.cup11.A.voiceB.coatC.storyD.memory12.A.expectB.knowC.needD.mean13.A.less thanB.more thanC.rather thanD.other than14.A.AndB.SoC.ThenD.But15.A.tastedB.peelC.washedD.cut16.A.separatedB.matchedC.were the sameD.were different17.A.strangeB.newC.deepD.wet18.A.itB.themC.thatD.one19.A.in caseB.as ifC.althoughD.in order that20.A.happyB.luckyC.richD.moved