【单选题】Thus, global-warming skeptics write off the______of climate research investigators, emphasizing the______of others' reasoning, but not of their own.
【简答题】A、B、C三种强电解质,它们在水中电离出的离子如下表所示: 阳离子 Ag + Na + 阴离子 NO 3 - SO 4 2- Cl - 下图所示装置中,甲、乙、丙三个烧杯依次分别盛放足量的A、 B、 C三种溶液,电极均为石墨电极。接通电源,经过一段时间后,测得乙中c电极质量增加了27g。常温下各烧杯中溶液的pH与电解时间(t)的关系如图。据此回答下列问题: (1)M为电源的 极(填“正”或“负”)...
【简答题】阅读理解。 Skeptics are strange lot. Some of them refuse to admit the serious threat of human activities to the environment, and they are tired of people who disagree with them. Those people, say skeptics,...