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Human males living with their moms may not expect to have much luck hooking up this Valentine"s Day. 【C1】______among the northern Muriqui monkeys, males that spend the most time around their mothers seem to get a(n) 【C2】______boost when mating time rolls around. The findings, 【C3】______in the Proceedings of the National Academy of Sciences USA, suggest that females in some【C4】______may have evolved to play a critical role in their sons" reproductive【C5】______. Karen Strier, the paper"s lead author and a professor at the University of Wisconsin-Madison, says the paper "【C6】______" the so-alled grandmother hypothesis, a【C7】______in which human females evolved to live past their prime reproductive years to spend more time【C8】______offspring. The research team observed and【C9】______genetic data from a group of 67 wild monkeys living in a protected reserve in Brazil"s Atlantic Forest: infants, mothers and possible fathers. They found that six out of the thirteen【C10】______males they studied spent more time around their mothers than would be expected by chance. These same six monkeys, on【C11】______, reproduced the greatest number of 【C12】______. The investigators are still trying to 【C13】______why. It"s not until we see moms intervening and helping their sons out," Strier says. "Maybe【C14】______sitting near their moms, they get to see when females are【C15】______active, or maybe they just get more familiar with other【C16】______." The findings can【C17】______with future conservation efforts for the critically【C18】______animals. Strier says, "the【C19】______ thing we would want to do is【C20】______a male out of the group where it was born." 【C2】
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Human males living with their moms may not expect to have much luck hooking up this Valentine"s Day. 【C1】______among the northern Muriqui monkeys, males that spend the most time around their mothers seem to get a(n) 【C2】______boost when mating time rolls around. The findings, 【C3】______in the Proceedings of the National Academy of Sciences USA, suggest that females in some【C4】______may have evolved to play a critical role in their sons" reproductive【C5】______. Karen Strier, the paper"s lead author and a professor at the University of Wisconsin-Madison, says the paper "【C6】______" the so-alled grandmother hypothesis, a【C7】______in which human females evolved to live past their prime reproductive years to spend more time【C8】______offspring. The research team observed and【C9】______genetic data from a group of 67 wild monkeys living in a protected reserve in Brazil"s Atlantic Forest: infants, mothers and possible fathers. They found that six out of the thirteen【C10】______males they studied spent more time around their mothers than would be expected by chance. These same six monkeys, on【C11】______, reproduced the greatest number of 【C12】______. The investigators are still trying to 【C13】______why. It"s not until we see moms intervening and helping their sons out," Strier says. "Maybe【C14】______sitting near their moms, they get to see when females are【C15】______active, or maybe they just get more familiar with other【C16】______." The findings can【C17】______with future conservation efforts for the critically【C18】______animals. Strier says, "the【C19】______ thing we would want to do is【C20】______a male out of the group where it was born." 【C12】
Human males living with their moms may not expect to have much luck hooking up this Valentine"s Day. 【C1】______among the northern Muriqui monkeys, males that spend the most time around their mothers seem to get a(n) 【C2】______boost when mating time rolls around. The findings, 【C3】______in the Proceedings of the National Academy of Sciences USA, suggest that females in some【C4】______may have evolved to play a critical role in their sons" reproductive【C5】______. Karen Strier, the paper"s lead author and a professor at the University of Wisconsin-Madison, says the paper "【C6】______" the so-alled grandmother hypothesis, a【C7】______in which human females evolved to live past their prime reproductive years to spend more time【C8】______offspring. The research team observed and【C9】______genetic data from a group of 67 wild monkeys living in a protected reserve in Brazil"s Atlantic Forest: infants, mothers and possible fathers. They found that six out of the thirteen【C10】______males they studied spent more time around their mothers than would be expected by chance. These same six monkeys, on【C11】______, reproduced the greatest number of 【C12】______. The investigators are still trying to 【C13】______why. It"s not until we see moms intervening and helping their sons out," Strier says. "Maybe【C14】______sitting near their moms, they get to see when females are【C15】______active, or maybe they just get more familiar with other【C16】______." The findings can【C17】______with future conservation efforts for the critically【C18】______animals. Strier says, "the【C19】______ thing we would want to do is【C20】______a male out of the group where it was born." 【C8】
Human males living with their moms may not expect to have much luck hooking up this Valentine"s Day. 【C1】______among the northern Muriqui monkeys, males that spend the most time around their mothers seem to get a(n) 【C2】______boost when mating time rolls around. The findings, 【C3】______in the Proceedings of the National Academy of Sciences USA, suggest that females in some【C4】______may have evolved to play a critical role in their sons" reproductive【C5】______. Karen Strier, the paper"s lead author and a professor at the University of Wisconsin-Madison, says the paper "【C6】______" the so-alled grandmother hypothesis, a【C7】______in which human females evolved to live past their prime reproductive years to spend more time【C8】______offspring. The research team observed and【C9】______genetic data from a group of 67 wild monkeys living in a protected reserve in Brazil"s Atlantic Forest: infants, mothers and possible fathers. They found that six out of the thirteen【C10】______males they studied spent more time around their mothers than would be expected by chance. These same six monkeys, on【C11】______, reproduced the greatest number of 【C12】______. The investigators are still trying to 【C13】______why. It"s not until we see moms intervening and helping their sons out," Strier says. "Maybe【C14】______sitting near their moms, they get to see when females are【C15】______active, or maybe they just get more familiar with other【C16】______." The findings can【C17】______with future conservation efforts for the critically【C18】______animals. Strier says, "the【C19】______ thing we would want to do is【C20】______a male out of the group where it was born." 【C4】
背景资料 某机电设备安装公司承建该市一新建住宅小区机电安装工程，工程内容包括：高层建筑给排水管道安装、热水管道安装、采暖管道安装、输气管道安装等。 管道安装完成后，该安装公司对管线和设备进行了相应的压力、严密性试验以及防腐施工，验收合格后进行绝热层施工。施工中发生以下事件： 事件一，施工中，由于缺乏监管，工人采用普通铁丝对保温层进行捆扎，每节管壳只捆扎了一道。 事件二，工程中部分管道使用金属保护层，在垂直管道施工时按管道坡向自上而下进行施工。 问题 2012年7月，计算机中心空调水管上的平衡调节阀出现故障，3～5层计算机中心机房不制冷，建设单位通知A施工单位进行维修，A施工单位承担了维修任务，更换了平衡调节阀，但以保修期满为由，要求建设单位承担维修费用。 问题 平衡调节阀系统安装前应做什么试验
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