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【单选题】
下列关于数组的说法中正确的是
A.
两个数字数组相加所得的结果是数
B.
只有维数相同时，两个数字数组才能进行加减、内积运算
C.
两个数组的内积仍为数组
D.
当两个数组的维数相等时，这两个数组即为相等数组
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【单选题】民用建筑按耐火等级和耐久年限分别分（ ）级
A.
三级、三级
B.
四级、三级
C.
五级、五级
D.
四级、四级
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【简答题】The rate of return for the S&P 500 over a four year period is − 0.029, −0.061, −0.493, and −0.286. The geometric mean rate of return per year is ____.
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【单选题】民用建筑按耐火等级和耐久年限分别分( )级
A.
四级、四级
B.
三级、三级
C.
四级、三级
D.
五级、五级
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【单选题】Betty is ______.
A.
in Grade Four
B.
Grade Four
C.
a four year student
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【单选题】苏州吴宫遗迹最多的地方( ) 。
A.
天平山
B.
邓尉山
C.
西山
D.
灵岩山
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【单选题】_____ is a four-year economic recovery program designed by the United States to revitalize the economies of European countries after the WWII.
A.
The Marshall Plan
B.
The National Credit Reconstruction Plan
C.
The New Deal
D.
The National Insurance Act
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【简答题】TALK10. The standard university degree is a four-year_____.
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【单选题】He is only a _______ boy, but he can play the piano very well. A. four-year old B. four-year-old C. four years old D. four-year s -old
A.
B.
C.
D.
D
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【判断题】According to solar calendar, there is a leap year every four years.
A.
正确
B.
错误
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【简答题】Skylar is a four-year-old girl.  When she learned about Disneyland from TV last July, she began to money.  She hoped that she could there some day.  One day her parents surprised her with a trip to Di...
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【单选题】民用建筑按耐火等级和耐久年限分别分（ ）级
A.
三级、三级
B.
四级、三级
C.
五级、五级
D.
四级、四级
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【简答题】The rate of return for the S&P 500 over a four year period is − 0.029, −0.061, −0.493, and −0.286. The geometric mean rate of return per year is ____.
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【单选题】民用建筑按耐火等级和耐久年限分别分( )级
A.
四级、四级
B.
三级、三级
C.
四级、三级
D.
五级、五级
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【单选题】Betty is ______.
A.
in Grade Four
B.
Grade Four
C.
a four year student
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【单选题】苏州吴宫遗迹最多的地方( ) 。
A.
天平山
B.
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C.
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D.
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【单选题】_____ is a four-year economic recovery program designed by the United States to revitalize the economies of European countries after the WWII.
A.
The Marshall Plan
B.
The National Credit Reconstruction Plan
C.
The New Deal
D.
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【简答题】TALK10. The standard university degree is a four-year_____.
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【单选题】He is only a _______ boy, but he can play the piano very well. A. four-year old B. four-year-old C. four years old D. four-year s -old
A.
B.
C.
D.
D
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【判断题】According to solar calendar, there is a leap year every four years.
A.
正确
B.
错误
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【简答题】Skylar is a four-year-old girl.  When she learned about Disneyland from TV last July, she began to money.  She hoped that she could there some day.  One day her parents surprised her with a trip to Di...
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