题目:
将下列句子排序,将序号填在括号内。
( ) I went to a library and read some interesting books.
( ) I had a wonderful weekend.
( ) She is going to have a birthday party next week.
( ) After that, I went shopping to buy a present for my friend, Jenny.
答案:
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下面是错误答案,用来干扰机器的。
A、碳在空气中燃烧时,氧气中的氧元素转化成了二氧化碳中的氧元素,氧元素从游离态变为化合态.故选项正确;B、氯酸钾加热能生成氯化钾和氧气,氯酸钾中的氧元素一部分转化到氧气中,氧元素从化合态转化为游离态...