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1990年，阮中怀夫妇与邻村的胡进夫妇达成了收养协议，将儿子阮星(6岁)送给胡进夫妇收养。阮星被收养后，改名胡星，受到养父母一家宠爱，并与生父母时有往来。1996年，胡星因逃学，胡进气愤不过，打了他一个耳光，胡星赌气回到阮家。后胡进夫妇多次到阮家找胡星，要领他回家，而胡星坚决不回，并提出要断绝与养父母的关系。两个月后，阮中怀夫妇提出解除收养关系。胡进夫妇经过考虑，同意解除收养关系，但要求阮中怀夫妇补偿他们在6年间支付的抚养费12000元。阮中怀夫妇却认为收养关系的解除，系胡进夫妇的虐待行为所致，因而不能付给扶养费。双方争执不下，诉到法院。 问： 阮中怀夫妇拒绝支付扶养费用是否有法律依据
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Alcohol may taste sweeter if you were exposed to it before birth, suggests a study in rats. The findings may shed new light【C1】______why human studies have previously【C2】______fetal alcohol exposure to increased alcohol【C3】______later in life, and to a【C4】______age at which a person【C5】______starts drinking alcohol. Alcohol"s taste is a(n) 【C6】______of sweet and bitter components. To【C7】______whether prenatal alcohol exposure could【C8】______the perception of these components, Steven Youngentob at the State University of New York in Syracuse and John Glendinning at Columbia University in New York【C9】______how eagerly rats consumed alcohol, sweet water【C10】______bitter water. They found that young rats whose mothers had consumed alcohol during pregnancy【C11】______alcohol and consumed more of the bitter water than the【C12】______of mothers that didn"t consume alcohol. Rats that had been exposed to alcohol before birth also seemed to be more【C13】______to the smell of alcohol. Prenatal exposure seems to reduce the【C14】______bitterness of alcohol, making it seem【C15】______, says Youngentob. Both of these differences seemed to【C16】______once the rats reached adulthood—but【C17】______they hadn"t tasted alcohol during their youth. If prena-tally exposed rats did consume alcohol in their youth, these preferences seemed to become【C18】______for life. "The take-home message is to keep kids away from【C19】______for as long as possible—【C20】______if they have had prenatal exposure," says Youngentob. 【C16】
患者，女，32岁，已婚。患痛经2年，每于行经的第1、2天，小腹冷痛，喜热，拒按，经量少、色黯、有块，舌苔白腻，脉沉紧。其证候是（ ）。
患者，女，22岁，未婚。经期延后，量少、色黯、有血块，腹痛喜热，畏寒，舌黯苔白，脉沉紧。其治法是（ ）。
下列人体部位X线摄影中，所需管电压最高的为
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