题目内容

Cet-6-1.17-Exercise 02Economic inequality is the “defining challenge of our time,” President Barack Obama declared in a speech last month to the Center for American Progress. Inequality is dangerous, he argued, not merely because it doesn’t look good to have a large gap between the rich and the poor, but because inequality itself destroys upward mobility, making it harder for the poor to escape from poverty. “Increased inequality and decreasing mobility pose a fundamental threat to the American Dream,” he said. How does Obama view economic inequality?

A. It is the most malicious social evil of our time.
B. It is a positive response to changed circumstances.
C. It is the biggest obstacle to social mobility.
D. It is an attempt to combat the economic recession.

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A. 羽状网脉
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C. 直出平行脉
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芭蕉叶的脉序是

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B. 直出平行脉
C. 横出平行脉
D. 射出脉序
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叶轴作一次分枝,在分枝上又形成羽状复叶,这种叶成为

A. 一回羽状复叶
B. 三回羽状复叶
C. 二回羽状复叶
D. 叉状羽状复叶
E. 四回羽状复叶

下列属于一次原始凭证的有()。

A. 限额领料单
B. 领料单
C. 收据
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