英语周报2020一2021八年级新目标第一期答案

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

22.(12分)(1)①使用催化剂(2分NO的产率(2分)03540tin(2)①NO2(2分)②0.04mol·L·min1(2分)向容器中加人0.8moNO2(g)(2分,其他合理答案也给分)b(2分【解析】(1)0曲线Ⅱ相对于曲线I改变的条件是使用催化剂。②升高温度反应速率加快,且平衡正向移动NO的产率升高(2)①由表中数据可知,x代表NO2,Y代表N2O②0~10min内,v(NO2)4mol·L0. 04 molmn;20min时,政变的条件是向容器中加入0.8 mol No2(g),相当于增大压强吧衡逆向移动混合物中NO2的百分含量减小。

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