题目

化学符号是化学学习的重要工具，用化学符号表示 （1） 氯化钠是由构成的； （2） 用于改良酸性土壤的物质； （3） 溶于水使温度显著降低的化合物； 答案：【1】Na+、Cl- 【1】Ca(OH)2 【1】NH4NO3根据短文内容，从下框的A—F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余项(E涂AB,F涂AC)A Avoid asking your child too many questionsB Tell your child stories about your growing upC Don’t judge or criticize your childD Listen to your kids with respectE Provide pressure-free conversation opportunitiesF Ask children gently what they think   If your child has gone from a continuous chatterbox to making conversations that consist mostly of yes and no, it’s time to consider these tips on how to talk to kids, so you’ll know what’s going on in your child’s world.小题1:  The quickest way to get kids to shut up and, as a result, shut you out of their lives is to continuously press them about things. A more effective way is to sit back and patiently wait for them to open up in a low-stress family and then be prepared to listen.小题2:   Parents can sometimes make kids at a young age decide it is best not to talk about something when they are criticized. If you really want to know what’s on your child’s mind, then avoid passing judgment and focus instead on why something seems important to your child.小题3: If you want to raise a creative and independent thinker, stop telling your child what he ought to feel or think. You can gently encourage additional conversations by simply asking why he feels the way he does or what he would do in a certain situation.小题4:   You may think you’re just asking questions out of curiosity when communicating with your child, but an endless stream of questions about what they did, whether everyone got along, if they went to the bathroom, ect., are enough to make anyone shut up! Practice patience and let your kids open up on their terms.小题5: Kids can relate to you and other adults when you tell your stories happening when you were their age. Talking to kids by telling them about things like something embarrassing that happened or the first crush(迷恋) you had helps them to connect with you and understand that you might actually know what they are going through!