题目

火柴头上的深色物质主要成分是KClO3、MnO2和Sb2S3（硫化锑），火柴盒侧面涂有一层红褐色物质，主要成分是红磷（P）和玻璃粉。划火柴时，借助摩擦产生的热，KClO3在MnO2催化下放出O2，使红磷燃烧。同时Sb2S3也可与O2反应生成Sb2O3和一种气体。Sb2S3燃烧生成Sb2O3和一种气体的化学方程式为（    ）A、Sb2S3＋8O2Sb2S3＋3SO2      B、Sb2O3＋9O2Sb2O3＋3SO2C、2Sb2S3＋8O22Sb2O3＋6SO2    D、2Sb2S3＋9O22Sb2O3＋6SO2任务型阅读Thinking about a future career cm bung a lei of stress. This cuts up the question into workable issues that you and your child can enjoy dealing with throughout their childhood years.Here's how:In your child's lift, there are times when they are given the opportunity to see and/or discuss a certain career Schools have Career Day. an aunt or uncle talks about what they do for a living or your child's youth group goes on a trip to a hospital und talks to the staff there. When your Child shows interest in a certain career. you should do some research. Then, you can offer your child some information on that job and related jobs. It is a wonderful the online resource.Help your Child weigh the pros and cons for his or her different career interests. Encourage your child to narrow（缩小）the cboice down to five at the most. This is a good time to begin ordering in college and technical school lists. Use the lists and any other information you have found as an ice breaker for more converasations with your child. Make this a clear message. Teach your child that part of be ing independent is knowing when and who to lead on,trust and respect.A.Do you fed you have open communication with your child?B.The Occupational Oudook Handbook gives you what schooling is needed.C. The final decision lies with your child, but you do have the right to have input.D. Choosing the right career is one of die mm important decisions your child will make in life.E. Figure out the path your child would have to take to obtain the schooling, for his career choices.F. Each of these nines is an opportunity for you to ask your child what he thought of those jobs or that field of work.G. Parents need to learn to help their child conquer this great question by dropping seeds of conversation as time goes by Bud watch them grow into ideas.