类推的思维方式在化学学习与研究中经常采用，但类推出的结论是否正确最终要经过科学验证。以下类推的结论正确的
| A．离子是带电的原子或原子团，带电的原子或原子团不一定是离子 |
| B．碱溶液一定呈碱性，呈碱性的溶液不一定是碱溶液 |
| C．氧化物含有氧元素，含有氧元素的化合物一定是氧化物 |
| D．中和反应有盐和水生成，所以有盐和水生成的化学反应一定是中和反应 |
相关试题
选择与图意相符的短语，将其标号填写在括号内。（共5分，每小题1分)
A do exercise
B make a mess
C do math problems
D keep off the grass
E respect old people and help them
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A. How far B. How many C. How
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A. did ; do ; does
B. do ; do; went
C. do; do ; want
________give the ball to him. Give it to________.
A. Not; her B. Don't; herC. Don't; he
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