实验室用KClO₃和浓盐酸反应制取氯气，化学方程式为：KClO₃＋6HCl＝KCl＋3Cl₂↑＋3H₂O 若生成71g氯气，则被氧化的氯化氢（  ）

—John looks very     ,do you think so?

—Yes.He needs to eat more food.

阅读理解

    Do you like Home with Kids(《家有儿女》)?It is very popular(受欢迎的)now. Many children like it. There are five people in the family. There is a sister and two brothers in their family.

    Their father is a film director(导演). He doesn't often do housework. He is always happy. Their mother doesn't go to work. She stays at home and does housework. And she loves her children very much, but she gets angry easily. Xiaoxue is their daughter. She is a good student. Big brother, Liu Xing, can always make others happy. He likes ball games. Little brother, Xiaoyu, is helpful. He likes playing computer games. This is a happy family.

阅读短文, 判断正误。

某厂是一个国有企业，由于产品、管理、沉重的社会负担等原因，企业出现严重亏损。新班子上任后，他们进行了一系列改革。一方面进行市场调研，调整产品的结构，加速新产品的开发；另一方面狠抓营销，实施名牌战略，最大限度地提高产品的市场占有率。在全厂职工的共同努力下，该厂利税连续多年以50%以上的速度增长。在此基础上，他们开始了资本运营，在全国各地投资办厂，逐渐形成了一个跨地区、跨行业、跨所有制的大型企业集团。

请问：该厂是怎样坚持唯物辩证法的发展观的？

在基因工程技术中，需要用氯化钙处理的步骤是（　　）