2022英语周报 59答案

第三节One possible versionParagraph 1Finally, afler struggling for a minute or tuo, I still gotpulled underwater. I told myself I should never give upThen I pulled the weed again with great efforts. The weedfinally broke. I swam back to the surface to take a debreath. I saw two young men in canoes, racing each other.I was exhausted and shouted for help. The two men saw meand raced towards me. By the time they reached me, I hadbeen already unconsciousParagraph 2When woke up, I was in an empty room lying on abed. It was not until a doctor came into the room that I realized that I was in a hospital. Jimmy and Bobby told me thetwo young men brought me to the shore and sent me to thehospital. After a few minutes, my parents with half angryand half worried faces walked in. My parents scolded me ifor running out of the house secretly but were also glad thatI was not seriously injured. I will never forget that terrifyingexperience. Neither will I ever want to show off again

10.B【解析】c(H K (CH, COOH)c(CH1COOH-c(CH2COo)2,加水稀释,c(CH12COO-)减小,K,(CH3COOH)不变,故7c(CH COOH的值增大,A项错误下H1KNH3·H2Oc(OH"),加入少量硫酸铵固体c(NH)增大,抑制NH·H2O电离,c(OH)减小,KCNH,HO)不变,故xNH,,o的值增大,B项正确:x(H ), c(Ch COo5K、(CH1COH温度不变,其值不变,C项错误c(OH-)KB(NH3·H2O)c(NH3·H2O)c(NHt.,不断通入CO,c(NH)增大,K(NH·H2O)不变,故c(NH3,H2O的值减小,D项错误

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