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【单选题】
What is the real relationship between education and economic development? We have to suspect that continuing economic growth promotes the development of education even when governments don't force it. After all, that's how education got started. When our ancestors were hunters and gatherers 10,000 years ago, they didn't have time to wonder much about anything besides finding food. Only when humanity began to get its food in a more productive way was there time for other things. The author quotes the example of our ancestorsto showthat education emerged ______.A.
when people had enough time
B.
prior to better ways of finding food
C.
when people on longer went hungry
D.
as a result of pressure on government
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【多选题】劳动合同终止是指劳动合同关系消灭，即劳动关系双方权利义务的失效，（ ）属于劳动合同自然终止。
A.
劳动者退休
B.
劳动合同约定的终止条件出现
C.
定期劳动合同到期
D.
劳动关系主体一方消灭
E.
以完成一定工作为期限的劳动合同规定的工作任务完成
【简答题】函数f(x)=xsinx，下列选项正确的是______． (A)当x→∞时为无穷大 (B)在(-∞，+∞)内有界 (C)在(-∞，+∞)内无界 (D)当x→∞时有极限
【单选题】下列关于劳动合同的说法中，错误的是()。
A.
.劳动合同具有从属性
B.
.劳动合同是双务合同
C.
.劳动合同是实践性合同
D.
.劳动合同往往涉及第三人的物质利益关系
【简答题】基本逻辑关系有三种,它们是 、 和非运算。
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