2022英语周报高考专版10答案

35.[化学—物质结构与性质(1)1s2s22p3s23p53d°4s24p2(2分)(2)干冰(1分);键(1分)(3)CH4(1分)(4)F(1分);L(1分)(5)HC=CH(2分)(6)2(2分);12(2分)(T)MA·a2g·cm-3(2分)【解析】本题主要考査物质结构与性质,考查学生对物质结构的理解能力和综合运用能力。(2)干冰是分子晶体,足球烯是分子晶体,金刚石是原子晶体,石墨是介于分子晶体和原子晶体之间的混合型晶体3)同主族元素从上至下原子半径逐渐增大,与氢形成的共价键键能逐渐减小,最简单气态氢化物的稳定性逐渐减弱(5)含σ键与π键数目之比为3:2的物质为乙炔(6)硅晶体结构类似于金刚石,每个硅原子与周围四个硅形成共价键,而每个共价键被两个硅原子分摊:42;观察干冰晶体,与顶点上的二氧化碳分子最近距离的二氧化碳分子有3个,而每个二氧化碳分子被两个晶胞共用,有8×3×=12个(7)根据密度计算公式:441.76×1032gNA·(10-10·a)

读后续写 One possible version)A bad guy just p/cked Kim up and took her away! yelled Julie. So shocked were Kims parents thatthey jumped up from the sofa and rushed over to Julie. Learning what had happened, they phoned thepolice without delay. The nextnt, they jumped into their car and drove off directed by Julie. By thenT had reached the alley, but the man was nowhere to be seen. "I must find Kim, "TJ said to himself. Heran along the alley to the end, where he spotted the man walking towards a white house. "Stop! Stop Withhese words, he charged at the guy fearlessly and held fast to Kim. However hard the guy tried to get rid ofTJ. TJ wouldnt give inAt that very moment, Kim s parents arrived. Help! Help! "TJ shouted. Immediately Kim's father tookoff toward the guy. Seeing this. he guy hurriedly let go of Kim and broke into a run. Kim's father dashedup, caught hold of him and pressed him to the ground. Kim ran crying into her mother s arms. Minutes later,the police arrived and arrested the guy. TJ breathed a sigh of relief and smiled happily. T]'s quick thinkingand bravery saved a little girl in the neighborhood from unimaginable consequences

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