简述美术课程评价的发展趋势。
参考答案:(1)突显质性评价方式;
(2)重视学生的主体地位;
(3)强调与生活相联系;
(4)注重评价探究能力;
(5)倡导多主体评价方式。
下图所示是中学化学中常用的实验装置。请结合图示回答下列问题:
(1)实验室加热某固体物质的方法制取O2,选用的制取和收集装置的最好组合是_______(填序号),其反应的化学方程式为:____________________________________________;
(2)实验室制取CO2气体,选用的制取和收集装置的组合应是____________(填序号),其反应的化学方程式:_______________________________________;
(3)仅从反应物的状态考虑,说明A. B装置的适用范围:______________________________。
You can't imagine _____ when they received these nice Christmas presents. [ ]
A. how they were excited
B. how excited they were
C. how excited were they
D. they were how excited