A:非金属氧化物一定是酸性氧化物
B:金属氧化物一定是碱性氧化物
C:酸性氧化物均可以跟碱反应
D:不能跟酸反应的氧化物一定能跟碱反应
There are three people in Yang Yang's family. They like different kinds of food. Yang Yang likes rice a lot. But she doesn't like chicken at all. Her father is from Shanxi. He doesn't like rice at all. He likes chicken and bread very much. Her mother is from Dalian. She doesn't like rice or bread at all. But she likes fish and vegetables a lot. They love each other and help each other.
化学与人类生活、社会可持续发展密切相关,下列措施有利于节能减排、保护环境的是( )
①加快化石燃料的开采与使用;②研发易降解的生物农药;③应用高效洁净的能源转换技术;④田间焚烧秸秆;⑤推广使用节能环保材料;⑥2M+N=2P+2Q ,2P+M=Q(M、N为原料,Q为期望产品)符合“化学反应的绿色化”的要求
《____》扉页上写的一首俳句。大概可译为“明月呀,照着去年的雪,在梅花下。” 日本有位女评论家说川端是只____,从外形上看,是一只瘦鹤。而我认为川端在精神气质上,他是一树病梅。