近年来，中国人民银行为纪念一些重大社会事件，陆续发行了一部分小面额的纪念钞。这些纪念钞与同面额人民币等值流通。有投资者认为，这些纪念钞面值低、发行量少、升值潜力大、具有收藏价值。
央行发行纪念钞的事实说明，国家可以（）①决定纪念钞的实际购买力②决定纪念钞的价值③决定纪念钞的面值④根据经济社会发展需要决定纪念钞的发行数量
A.①②③
B.②③
C.③④
D.①③④
参考答案：C
| 根据短文内容，选择最佳答案。 |
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| 1. How much is it if I want to buy a large spicy chicken pizza? |
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| A. $15 B. $19 C. $22 D. $ 23 |
| 2. Bobby wants the digital watch. What must he buy in order to get it? |
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| A. Half a dozen chicken wings. B. Buy something over forty dollars. C. Order something over eighty dollars. D. Five pizzas or more. |
| 3. The service hour on Saturday is _______ hours longer than on Fridays. |
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| A. 7 B. 6 C. 8 D. 5 |
| 4. Chris ordered ten large California pizzas for his team of workers. How much did he pay for his order? |
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| A. $ 176 B. $220 C. $230 D. $224 |