单选题地主A拥有一块土地的所有权,他雇佣农民B和C在其土地上进行生产。地主A和农民B、C订有合约,根据合约,地主A每年支付农民B和C一个固定工资w。对此,经济学家Qheung认为,固定工资加土地产出提成的合约形式能更好地激励农民努力劳动,同时还有助于地主和农民之间进行恰当的风险分担.请问Cheung所提出的合约形式期望解决以下的哪种问题?( )
单选题In the United States, older people rarely live with their adult children. But in many other cultures children are expected to care (1) their aged parents. In some parts of Italy, the percentage of adult children who (2) with their parents (3) 65 to 70 percent. In Thailand, too, children are expected to take care of their elderly parents; few Thai elderly live (4) . What explains these differences in living arrangements (5) cultures? Modernization theory (6) the extended family household to low levels of economic development. In traditional societies, the elderly live with their children in large extended family units for economic reasons. But with modernization, children move to urban areas, leaving old people (7) in (8) rural areas. Yet modernization theory cannot explain why extended family households were never common in the United States or England, or why families in Italy, which is fully modernized, (9) a strong tradition of intergenerational living. Clearly, economic development alone cannot explain (10) living arrangements. Another theory associated intergenerational living arrangements with inheritance patterns. In some cultures, the stem family pattern of inheritance (11) . (12) this system, parents live with a married child, usually the oldest son, who then (13) their property when they die. The stem family system was once common in Japan, but changes in inheritance laws, (14) broader social changes brought (15) by industrialization and urbanization, have (16) the (17) .In 1960 about 80 percent of Japanese over 65 lived with their children; by 1990 only 60 percent did-a figure that is still high (18) U.S. standards, but which has been (19) steadily. In Korea, too, traditional living arrangements are (20) : the percentage of aged Koreans who live with a son declined from 77 percent in 1984 to 50 percent just 10 years later. Although most elderly Koreans still expect to live with a son, their adult children do not expect to live with their children when they grow old.
单选题垄断资本主义时期占统治地位的金融资本是( )
单选题在中长期中,财政赤字将导致( )。
单选题已知函数f(x+y,x-y)=x2-y2对任何x与y成立,则=______.
单选题在公式A=P(A/P,i,n)中,P应发生在( )
单选题科学家发现,人体中高密度脂蛋白(HDL)对心脏病有预防作用。每天吸烟超过20支者,体内HDL含量明显下降;如停止吸烟,HDL含量就会增加。HDL含量最高的是瘦子,最低的是胖子。男性在四十几岁时,HDL含量下降;女性则相反,老年妇女的HDL含量高于老年男性。
由此可知以下哪一项是正确的?
单选题关于某一刑事案件有以下四个断言:
(1)有证据表明陈虎没有作案;
(2)作案者或者是王光,或者是陈虎,或者是祝同;
(3)也有证据表明王光没有作案;
(4)有人证实:在案发时,祝同在远离案发现场的一个足球赛的观众席上。
下面哪一项是关于题干中四个断言的正确描述?
单选题一种可变生产要素的短期生产处于第一阶段时, 关于平均产量和边际产量的说法中, 正确的是( )。
单选题某企业年初流动比率为2,速动比率为1;年末流动比率为2.3,速动比率为0.8。发生这种情况的原因可能是( )
单选题人类社会共同的经济规律是( )。
单选题如果上游工厂污染了下游居民的饮水,按科斯定理,_______问题就可妥善解决。( )
单选题能够真实反映资源稀缺程度、市场供求关系和社会劳动消耗的价格是( )
单选题今天的中国,改革依然是人心所向,大势所趋。在新的历史时期,在现在成就的基础上,经济社会要持续保持又好又快发展,就需要以更大的勇气、魄力和力度来推进改革、深化改革。只有这样,才能在用好机遇、化解风险中奋力闯出“深水区”,开创中国现代化的新境界。
由此可以推出下列哪一项?
单选题如果在需求曲线有一点,Ed= -2,P=20元,则MR为( )
单选题在一定的生产规模下,与产量大小无关的成本费用称为( )
单选题有关数据显示,从2005年以来,广东高校毕业生自主创业的数量约占当年高校毕业生的1%~2%。以2008年为例,应届高校毕业生中选择自主创业的仅占1.2%。而在西方发达国家,这个数字为20%~30%。由此看来,西方发达国家的大学生更具有创业才能。
以下哪一项正确,最能对上述结论构成质疑?
单选题关于基本粒子,目前最被认可的理论是“标准理论”。它约在30年前确立,已发现的基本粒子都可以根据这一理论进行解释。100多年来,质子、中子、电子等基本粒子陆续被发现。面对这些成绩,有人认为,宇宙间的基本粒子被发现得差不多了,即使有,也可以用现有的理论解释,因而不会给人们带来太大的惊奇。
以下哪一项如果为真,最能反驳以上观点?
单选题厂商的生产函数为f(x,y,z)=min{x
3
/y,y
2
,(z
4
一x
4
)/y
2
}那么,对于该厂商而言,它具有怎样的规模报酬特征?( )
单选题货币主义的代表人物是( )。
