化学就在我们身边,它与我们的生活息息相关.请按要求填空
①自来水生产过程中能凝聚水中悬浮物的是 ____(填物质名称);
②用活性炭去除冰箱中的异味是利用了活性炭具有 ____性;
③常作气体燃料的一种有机物是 ____(填化学式);
④可以做食品干燥剂的金属氧化物是 ____ (填化学式);
⑤能使带火星的木条复燃的气体是 ____;该气体在空气中的体积分数约为 ____
根据短文内容和所给汉语提示,写出短文空白处各单词的正确形式。每空限填一词。 At school many things happen to us. We may feel ____ (激动的)when we succeed in a school play. We may feel sorry if we lose an important ____ (比赛). We want to keep the memory in our lives. How to keep memories? Our teacher, Mr. Smith, has taught us how to ____ (记住)things to make our own yearbook. A yearbook is a____ (种) of book which is used to memory wonderful moments. It’s usually made at the end of year. Last ____ (十二月), we began to make our yearbook.____(首先) we chose the persons that had done something ____ (特殊的), then some ____ (学生) interviewed them, some ____ (写)down their stories, others took photos of them. Finally our teacher helped us to put the things____ (一起). Then we had our first yearbook.
下列句子中划线字的用法和意义不相同的一项是( )