石油化工生产中，可通过反应制得甲烷、乙烯、丙烯、苯等重要有机物．请回答：
（1）天然气（主要成分是甲烷）可做环保汽车的燃料，可燃物要燃烧必须具备的条件是______．
（2）自然界中消耗二氧化碳的主要途径是光合作用和海水吸收等，海水中的水与二氧化碳反应的化学方程式是______．
（1）可燃物要燃烧必须具备的条件是与氧气或空气接触，温度达到着火点．
故答案为：与氧气或空气接触，温度达到着火点；
（2）水与二氧化碳反应的化学方程式是：CO2+H2O═H2CO3．
故答案为：CO2+H2O═H2CO3．
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| Living and dealing with kids can be a difficult job, but living and dealing with parents can be even more difficult. If I have learned anything in my 16 ears, it is that 1 is very important, 2 when you disagree. With any relationship, you need to let other people know how you're 3 . When you're mad at your parents, or anyone else, not talking to them doesn't 4 anything. Communication 5 the concerns (所关注的事) of another. It means that you can't 6 come home from school, go up to your room and ignore (不理睬) everyone. 7 you just say "Hi", and see how their day was for five minutes, it is better than nothing. When 8 with parents, you always have to make them feel good about how they are doing 9 parents. If you are 10 to make them see something as you see it, tell that you'll listen to what they have to say, but ask them 11 to listen to you. Shouting or walking away only makes the situation 12 . This is an 13 : one night, Sophie went to a street party with her friends. She knew she had to be home by 14 , but she didn't feel she could jus 15 to go home. That would be rude. 16 , the had been nice enough to make her along with them. Needless to say, she was late getting home. Her parents were 17 at first, but when Sophie explained why she was late, they weren't as mad and let the incident go. Communication was the key factor here. If Sophie's parents had not been willing to 18 , Sophie would have been in a lot of trouble. Communication isn't a(n) 19 way deal, it goes both ways. Just remember, if you get into a 20 like Sophie's, tell the other person how you feel-listening is a key factor in communication. | ||||
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