美国国内经济的不平衡与国际经济的不平衡一样严重，其根本原因在于工资落后于不断上升的生产率，从1920 年到1929 年，工人每小时的工资只上升了2 ％，而其生产率却猛增了55 ％。”该材料显示，造成1929 年经济大危机的一个重要原因是[ ]
A．资本主义社会的基本矛盾
B．生产相对过剩严重
C．美国经济的虚假繁荣
D．自由放任的经济政策
答案：B
There is no doubt that the friends can improve our lives, kind of friend someone has. There are some good reasons why real are important. Real fiends can be a source(资源) of _ .When you are in trouble， for example， true friends will hope. Real fiends may help a friend to be as a student president，and the president of a country. Some of us will remember that school，work and life are better and more fun when with fiends. And there are other reasons why real friends are . You can quickly real and good fiends when you are down or when you need their help the most. Why? Because a real fiend will not you when you are down，and will not turn against you in jealousy(妒忌)，for example，when you succeed.
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