题目

2022年第24届冬季奥运会将在北京市和张家口市联合举行。如图所示，“五环”中相交两环中的物质间能够发生化学反应。（1）“五环”中已有的3种物质中，属于化合物的是_________。（2）甲、乙分别是O2、Fe2O3、稀盐酸、Ca(OH)2四种物质中的一种，其中，C与甲反应的现象为_________，物质乙为__________。（3）“五环”中的物质Fe可以替换成__________（填一种即可）。根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。How to Help a Teenager Make Good DecisionsHabitually poor decision making is actually common in teenagers. Naturally, such a habit makes parent-teen cooperation difficult, especially when a parent wants his teen to do what a " responsible adolescent" would do. A poor decision-making teenager can never run away from his responsibilities. 1.● Distinguish real problems from acts of pure "teenagerism". Teens often make poor decisions simply because they don-t have the experiences. By making small and harmless mistakes, like a recently- developed habit of careless consuming, a teen learns good decision-making skills on his own via self-correction.__ 2. Don't think the teen is making bad decisions just to challenge you. It's more likely it is out of a real inability to determine what's best for him.● 3. Tell your teen you understand his decisions while simply emphasizing that you don't have to agree with his decisions or treat his views as valid. By not judging his opinions, tastes or style, you are opening the road for better communication and problem solving opportunities.- Set clear expectations. 4. For example, if your teen refuses to study for his math final because "math is pointless," explain that you expect him to perform well in school, even in the "pointless" classes. Because you've already tolerated his opinion without trying to change his viewpoint, you two can easily agree that math isn't so useful, yet avoid saying "Let's just give up on math, then."● Find a middle ground. Trade insignificant freedoms, such as clothing style for the promise that he'll live up to academic and family responsibilities. 5._ Not only does giving up a bit of control solve many conflicts, but the extra freedom you give him can also improve his decision-making.A.Show tolerance.B. Learn to solve problems.C. Point out your expectations and his responsibilities.D. If your teen could realize it, allow him to be himself.E. A responsible adolescent must have role models to learn from.F. Therefore, it’s important to guide them with problem-solving strategies.G. Next time, he'll be more likely to think twice before making his buying decision.