若期初、期末价格分别为P0、Pn，期初、期末资产数量分别为q0、qn，下列计算式表示核算期资产负债全部价值变化的是（）。
参考答案：Pnqn-P0q0
词汇：根据句意填入一个恰当的单词完成句子。
1. What is your _________way to learn more English?
2. It doesn’t _________if you can’t understand spoken English.
3. Mei often _________mistakes in grammar.
4. Li Hong decided to_________lots of grammar notes in every class.
5. Her English improved when she started lots of_________practice.
X5032型铣床主轴上用来调节轴承径向间隙的锥度为（）。
A.1：10
B.1：12
C.1：15
D.1：17
