题干

我国的数字货币是指数字化人民币,属于法定加密数字货币,其本身是货币而不仅仅是支付工具。在央行数字货币体系中,有央行的数字货币发行库、商业银行的数字货币银行库和用户端(如手机)的数字钱包。关于数字货币理解正确的是(    )

①相较于传统纸币,它能节省发行、流通带来的成本

②支付宝支付、微信支付是网上支付,也是电子货币

③能提高交易或投资的效率,提升经济交易活动的便利性和透明度

④游戏货币、Q币等网络虚拟货币是一种数字货币

A:①②

B:②③

C:③④

D:①③

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     Teaching your child to read can be one of the most rewarding(值得的) experiences you have as a parent.

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      Nothing can replace the head start(起步时的优势)that a child receives from becoming familiar with books and the way that the written word sounds when read aloud. If your child sees that reading is important to you, then he will be much more likely to want to learn how to read himself.

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       If your child shows interest in learning letters and looking through books, he may be ready to begin learning to read. Learning how to read cannot be rushed. If your child has no interest in learning his letters, then wait a month or so and try again.

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      You can make this fun, such as saying “I see a k-æ-t-cat” whenever you see a cat. The sound of a letter is much more important than a letter's name because the child will need to combine the letter sounds to make words.

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      Some children learn their letters faster by seeing or hearing them, while other children learn letters by using their bodies. Encourage your child to draw the letter and then paste pictures of something that begins with that sound onto the letter. Sing songs about the letter. Read your child a story that repeatedly uses that letter sound.

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      Rather than try to teach a child 26 new letters at one time, focus on one letter a day or a week. This enable the child to master each letter sound and feel proud of himself/herself for doing so.


A. Read to your child daily.

B. Show your child your love for reading.

C.  Make sure your child is ready to begin learning how to read.

D. Focus on one letter at a time.

E. Teach your child the sound of each letter.

F. Use sight, sound and touch as you teach each letter.