[多项选择]关于国际货物买卖合同卖方担保义务的下列表述中，正确的有( )。
A. 卖方担保义务包括货物的品质担保和货物的权利担保
B. 如果货物有隐蔽的潜在的缺陷，而这些缺陷在风险转移至买方之后一段时间才显露出来，则尽管货物风险已经转移，卖方仍然要承担责任
C. 货物的权利担保义务是卖方的一项法定义务，即使买卖双方在合同中无此项规定，卖方仍须遵守
D. 卖方对货物知识产权的担保和对一般有形货物一样都是无条件的

Passage 1
Let children learn to judge their own work. A child learning to talk does not learn by being corrected all the time: if corrected too much, he will stop talking. He notices a thousand times a day the differences between the language he uses and the language those around him use. Bit by bit, he makes the necessary changes to make his language like other people’ s. In the same way, children learning to do all the other things they learn to do without being taught——to walk, run, climb, whistle, ride a bicycle——compare their own performances with those of more skilled people, and slowly make the needed changes. But in school we never give a child a chance to find out his mistakes for himself, let alone correct them. We do it all for him. We act as if we thought that he would never notice a mistake unless it was pointed out to him, or correct it unless he was made to. Soon he becomes dependent on the teacher. Let him do it him sel
A. not really important skills
B. more important than other skills
C. basically different from learning adult skills
D. basically the same as learning other skills

An Indian civil servant, SM Raju, has come up with a new way of providing employment for millions of poor people in Bihar. His campaign to encourage people to plant trees effectively addresses two burning issues of the world: global warming and shrinking job opportunities.
Mr Raju’ s success could clearly be seen on 30 August, 2009 when he organized 300,000 villagers from over 7,500 villages in northern Bihar to engage in a mass tree planting ceremony.
Mr Raju has linked his "social forestry" program to the central government’ s National Rural Employment Guarantee Act (NREGA), which is also designed to provide employment for poor people. Under NREGA -- started in February 2006 as the government’ s most ambitious employment generation scheme for poor people -- the authorities are bound by law to provide a minimum of 100 days of employment a year for members of families living below the poverty line. About 44% of Bihar’ s population
A. most people in Bihar will benefit from NREGA
B. the old and disabled people are not involved in tree planting
C. families who can’t ensure 75% survival rate of the trees will not be paid
D. Raju’ s new’plan will reduce Bihar’ s population below the poverty line