题目内容

(Para. 9) Why do the authors say the rise of this new life stage is a good thing?Because they think that young people can make use of the f___________of emerging adulthood to have experiences, otherwise they couldn’t have no matter when they were younger or older.

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(Para. 10) What is the disadvantage of this new life stage according to the authors?Some emerging adults feel o___________by the challenges of this life stage.

(Para. 11) What do the authors suggest parents do?Be p___________with emerging adults.

根据被测组分与其他组分分离方法的不同,不属于重量分析法的是( )

A. 汽化法
B. 沉淀法
C. 滴定法
D. 电解法

加入下列哪种下列溶液,能使BaSO4溶解度减小 ( )

A. 水
B. 硝酸钾溶液
C. 氯化钡溶液
D. 盐酸溶液

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