题目

(6分)根据题目要求书写化学用语(1)硫酸铁的电离方程式                             。(2)符合CO32－＋2H＋===H2O＋CO2↑的化学方程式                   。(3)氯水中滴加硝酸银溶液，该反应的离子方程式                   。  答案：(化学式错、没配平均不得分) (各2分，共6分)(1) Fe2(SO4)3   = 2 Fe3+ +3 SO42-(2) Na2 CO3  + 2H Cl = 2 NaCl +  H2O＋CO2↑(3) Ag+  +  Cl- = AgCl↓解析:略 Something roared like thunder. The earth shook a little and we heard the rat-a-tat-tat of gunfire. "Father!" Hassan cried. We sprung to our feet and raced out of the living room."Father! What's that sound? Hassan screamed, his hands outstretched toward Ali. Ali wrapped his arms around us. A white light flashed and lit the sky in silver. It flashed again and was followed by rapid sharp sounds of gunfire. "They're hunting ducks." Ali said in a hoarse voice. "They hunt ducks at night, you know." Don't be afraid.A siren(汽笛) went off in the distance. Somewhere glass broke and someone shouted. I heard people on the street, jolted from sleep and probably still in their pajamas, with ruffled hair and puffy eyes. Hassan was crying. Ali pulled him close, clutched him with tenderness. We stayed huddled that way until the early hours of the morning. The shootings and explosions had lasted less than an hour, but they had frightened us badly, because none of us had ever heard gunshots in the streets. They were foreign sounds to us then. The generation of Afghan children whose ears would know nothing but the sounds of bombs and gunfire was not yet born. Huddled together in the dining room and waiting for the sun to rise, none of us had any notion that a way of life had ended. The end came when Russian tanks were rolling into the very same streets where Hassan and I played, bringing the death of the Afghanistan I knew and marking the start of a still ongoing era of bloodletting.Just before sunrise, Baba's car peeled into the driveway. His door slammed shut and his running footsteps pounded the stairs. Then he appeared in the doorway and I saw something on his face. Something I didn't recognize right away because I'd never seen it before: fear. "Amir! Hassan!" He cried as he ran to us, opening his arms wide. "They blocked all the roads and the telephone didn't work. I was so worried!"We let him wrap us in his arms and, for a brief moment, I was glad about whatever had happened that night1.Who is the author of the passage?A.HassanB.AliC.BabaD.Amir2.By saying “they are hunting ducks”, Ali ______.A.told the children the truthB.tried to calm the childrenC.played a joke on the childrenD.cheered the children up3.We can infer from the passage that______.A.there were thunderstorms that nightB.Afghan children were used to the warC.that night was the end of people’s peaceful lifeD.people on the street shouted and broke the windows4.From the last sentence of the passage, we know______.A.the author was glad to see his father come home safeB.there was a chance that a world in peace was to comeC.what happened that night seemed nothing to the authorD.Baba’s arms gave the author temporary comfort and joy