选择题：一列数的规则如下 1、1、2、3、5、8、13、21、34...... 求第30位数是多少, 用递归算法实现。

英美法的渊源可以追溯到中世纪的()A.日耳曼习惯法和地方习惯B.判例法C.民法系D.成文法

共用题干 InflationBusiness and government leaders also consider the inflation rate to be an important general mndi-cator. Inflation is a period of increased spending that causes rapid rises in prices.________(51) your money buys fewer goods so that you get__

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简述宏观调控的强行控制方法。

共用题干 Why People Use Pseudonyms（假名字）?You can't choose the name you are given at birth,but in many countries you can change it legally when you reach adulthood.Of course,most people never change their names___________(51)they feel unhappy about them.Howeve