2020中国科学院上海硅酸盐所考研成绩发布时间公布！

中国持续多年处于国际收支“双顺差”,同时又是资本净流出国。请从国际收支平衡表的构成角度判断这是否矛盾?为什么?

以外延划分概念，通常有（　　）

A.单独概念
B.抽象概念
C.普遍概念
D.集合概念

Text 4"I like money and nice things,but it's not money that makes me happy.It's people,"says one woman in a World Bank survey.She's not alone:research has found that social integration is more important for well-being than income,and also decreases poverty.Loneliness,conversely,can be deadly:one study found it did more damage to health than smoking.This week,policymakers from 40 countries met in Colombia to ponder ways to measure deprivation that take account of more than just income,including isolation.Several Latin American countries are devising or have already adopted such"multi-dimensional"measures of poverty.Income can be a misleading measure of need because poor people end up living in different degrees of hardship depending on their intangible resources.Having strong social bonds eases financial deprivation.Friends and relatives can lend money,pool risk,mind children and bring news ofjob openings.Researchers from the London School of Economics found that when a group of Bangladeshi women were given business training and free livestock,not only djd they move up the income ladder,but their friends'lot improved too.A year later the friends'consumption had risen by almost 20%,and they claimed to have become sawier about business as well.The downside is that not having the right friends can deepen hardship.The more concentrated the poverty,the less helpful social networks tend to be.In Atlanta,living in a poor neighbourhood decreases the chance of having a friend with a job by almost 60%,and of having a friend who had been to university by over a third.A global survey conducted in 2014 by a polling firm,found that 30%of people in the poorest flfth of their country's population had nobody to rely on in times of need,compared t0 16%of the richest fifih.It is doubly unfortunate,then,that poor people are often socially excluded precisely because they are poor.Chileans and Venezuelans see poverty as a bigger cause of discrimination than gender or ethnicity,according to researchers from Oxford University.Several countries have experienced with schemes that connect lonely old people and deprived youth.Germany,for instance,has built"multi-generational"community centres where older visitors get computer coaching from teenagers.With luck,these connections will help:one American study found that in poor neighbourhoods,three-quarters ofjobholders found work through friends.Perhaps Gennany's centres will furnish income as well as company.38.The drawback of not having proper friends lies in

A.discrimination from the richest fifth.
B.loss ofchances to get university degrees.
C.no financial support from the govemment.
D.unhelpful social networks to get rid ofpoverty.