6.A解析:本题考查元素周期律知识。W、Ⅹ、Y、Z的原子序数依次增大,且Z原子N层上的电子数为1,则Z为钾元素,根据结构和化合价可推知W、X、Y分别为氧、氟、氯元素。钾元素与氧元素可形成离子化合物,A项正确;次氯酸不是强酸,B项错误;原子半径:K>C,C项错误;氟无正化合价,D项错误

二、读后续写范文(满分25分)Possible version 1Paragraph 1:It was time to put an end to the Magic Marty show. I walked over. "It was fishing line. " I sneeredfolding my arms. Marty subconsciously fingered the fishing line and nervously whispered, "So, are yougoing to tell people? Seeing the panic in his eyes, somehow, I hesitated. Should I_reveal the secret, Martymight lose his new_ friends. Finally, after struggling for a moment, I replied, "Nah, I won't say anythingMarty let out a relieved sigh, and I turned to walk awayParagraph 2Waitr"Marty jumped in front of me. Unexpectedly, he patted my arm, grinning. "You' ve got a prettygood eye for magic. Want to join me? "I nodded joy fully. That's how the Magic Marty and MysteriousMatt Lunch Show began. Now we've been a magic team for three months. And since I became a fellowmagician, Marty has let me in on some of his other tricks. It turns out that instead of a fake magician, Martyis a real friend.(150 words

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