{{B}}Single-parent
Kids Do Best{{/B}} Single mums are better at raising their kids than two parents - at least in the bird world. Mother zebra finches have to work harder and raise fewer chicks on their own, but they also produce more attractive sons who are more likely to get a mate. The finding shows that family conflict is as important an evolutionary driving force as ecological factors such as hunting and food supply. With two parents around, there’s always a conflict of interests, which can have a detrimental effect on the quality of the offspring. In evolutionary terms, the best strategy for any parent in the animal world is to find someone else to care for their offspring, so they can concentrate on breeding again. So it’s normal for parents to try to pass A. Single mums produce stronger sons. B. Single mums do not produce daughters. C. Two-parent families produce less attractive children. D. Two-parent families produce more beautiful offspring. [填空题]温病四大家指的是()、()、()、()。
[单选题]新形势下我们党面临着“思想懈怠的危险、能力不足的危险、脱离实际的危险、()”四大危险。
A.脱离群众的危险 B.思想滑坡的危险 C.消极腐败的危险 [单选题]保险标的是( )。
A.保险合同的客体 B.保险合同的载体 C.保险利益的主体 D.保险利益的载体 [名词解释]王爷庙
[单项选择]为消除铸铁焊接后及机加工残余应力,应在精加工或淬火前进行的退火方式是()。
A. 扩散退火 B. 消应力退火 C. 完全退火 D. 退火 [单项选择]甲公司对A产品实行1个月内“包退、包换、包修”的销售政策。2005年1月份销售A产品100件,2月份销售A产品80件,A产品的销售单价均为5000元。根据 2004年的经验,A产品包退的占4%、包换的占2%、包修的占6%。假设2005年2月份未出现退、换产品的情况,则甲公司该月份应确认A产品的销售收入为( )元。
A. 352000 B. 400000 C. 404000 D. 406000 [单选题]在声音的数字化过程中,采样频率越高,声
音的()越高.
A.A:保真度 B.B:失真度 C.C:噪声 D.D:频率 [多选题]博来霉素的用法包括
A.口服 B.皮下注射 C.肌内注射 D.动脉注射 E.静脉注射 [单项选择]白及具有的功效是()
A. 化瘀止血 B. 凉血止血 C. 收敛止血 D. 温经止血 E. 益气摄血 [单选题]造血干细胞移植患者出层流室前期饮食指导不正确的是()
A.消化道出血时可继续进食 B.不可以食用桃、香蕉、葡萄 C.严重腹泻遵医嘱禁食 D.从单一水果开始吃,适应后再吃第二种水果 [单选题]装置开工试油压,正确的操作是( )。
A.逐步提压,控制好不超压 B.一次升压至试压指标 C.关死试压阀进行试压 D.试压完毕快速消压 [填空题]长大隧道内无砟轨道无缝线路锁定轨温应适当降低,以 ℃为宜
[单项选择]以下含蛋白质相对较丰富的蔬菜是().
A. 木 B. 香菇 C. 菠 D. 萝卜 我来回答: 提交
|