宣和是哪位皇帝的年号：
A、宋钦宗
B、宋徽宗
C、宋仁宗

单项选择题What is strategic competence concerned with? A. A. Appropriate use of the language in social context B. B. Ability to create coherent written text or conversation and the ability to understand them C. C. Strategies one employs when there is communication breakdown due to lack of resources D. D. Knowledge of language itself, its form and meaning

单项选择题下列混合物，不能用分液漏斗分离的是 ( )。 A、乙醇和水 B、硝基苯和水 C、溴苯和水 D、四氯化碳和水