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问题 填空题

根据发酵粉（含碳酸氢钠和有机酸等）可与面粉、水混合直接制作发面食品的事实，说明碳酸氢钠能与酸反应．碳酸氢钠的俗称叫______，写出它与盐酸反应的化学方程式：______．

答案

碳酸氢钠的俗称小苏打，它与盐酸反应生成氯化钠、水、二氧化碳；

故本题的答案是：小苏打；HCl+NaHCO3=NaCl+H2O+CO2↑．

填空题

选词填空。

speak, study, with, favorite, birthday, China, English ,movie, actor, food, name, he

PEN PAL WANTED?My __1__ is Wu Peng, and my English name is Jim. My __2__ is on November 15th. I’m from __3__. I live in Shanghhai. I __4__ Chinese. I like sports very much. On weekends, I go to play sports __5__ my friend. English and math are my __6__subjects. I like __7__ class very much at school, because my English teacher is fun. I like history class, too. My favorite __8__ are actions and comedies. Bruce Lee is my favorite __9__. My favorite __10__ is tomatoes and eggs. Please write and tell me about you. My e-mail is Wu Peng @yahoo.com.cn.

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问答题 简答题

农产品免检进入市场销售需符合什么条件？
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