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【简答题】
过氧化氢常用作漂白剂、消毒剂、杀菌剂、脱氯剂等，溶液显弱酸性，可用过氧化钡与硫酸反应制得。 (1)写出过氧化钡的电子式________________。 (2)过氧化氢可与氢氧化钙反应制得过氧化钙，其反应方程式为________________。 (3)过氧化氢作脱氯剂的反应方程式为H 2 O 2 ＋Cl 2 ===2HCl＋O 2 ，1 mol Cl 2 参加反应时转移电子的物质的量为_____________。
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举一反三
【单选题】What news does the woman tell the man?
A.
She has got a job offer.
B.
She has got a promotion.
C.
Her company has launched a new product.
D.
Her company has received a big order.
【简答题】采用多道程序设计技术能充分发挥 与 并行工作的能力。
【简答题】采用多道程序设计技术能充分发挥 与 并行工作的能力。
【多选题】What problems does Birgit have?
A.
high staff turnover
B.
very noisy
C.
long hours at workingstation
D.
too crowded
E.
no promotion
F.
angry customers
G.
hearing problems and headaches
【单选题】听力原文：Nobody has more enthusiasm than she does in the promotion of the new model. What does the speaker mean?
A.
Everyone has more enthusiasm than she does.
B.
She's the most enthusiastic person I know.
C.
She's no more enthusiastic than the others.
D.
Nobody has any enthusiasm in the promotion.
【单选题】What does the organization “Living Will Promotion Association” encourage people to do?
A.
To lead meaningful life
B.
To explore the truth of life
C.
To decide how to be treated in their last days
D.
To be more active
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