荀子的政治思想是在人性恶的认识基础上建立的。他认为：人生有各种欲望，性好利，因此人性恶：所以要改造人性，通过自我改造和社会改造，人皆‘町以为尧舜：社会改造在于强化礼法。这说明当时（   ）

    ____does Obama keep his girls' normal life in the White House?

    He has____daughters. One is 14 and the other is 16. He asks them to put the table well, wash____, clean up their play area and desks. He gives____ just a dollar a week for their chores(家务).

    Sasha and Malia moved into the White House____their parents in January in 2009. Bo, the dog____part of the family a bit later. In their free time, they____play with it and they become good friends.

    Sasha and Malia get up____every day. After that, they have to make their beds, and they have to feed the dog. After school, they have to do their____. They don't watch TV on weekdays. But they can do____of activities on weekends.

    Obama is making a great effort(努力) to be a good father.

如图1为马尔芬氏综合征（又叫蜘蛛指症）的遗传家系图：

（1）该病的致病基因最可能位于____ 染色体上，属于____ （填“显”或“隐”）性遗传病．

（2）若Ⅳ₁与正常女性（X^BX^b，b为眼球震颤基因）婚配，所生的子女只患一种病的概率是____ ．

（3）研究人员检测了该家族中正常人和患者相应基因的编码链（非模板链）碱基序列，如图2所示：该家族正常人的基因编码链的碱基序列为CGCTCCTTCCGTCT____ ，患者的基因在“↓”所指位置处碱基发生了由____ →____ 的改变，导致由其合成的肽链上原来对应的____ 变为____ ．（丙氨酸GCA，精氨酸CGU，丝氨酸AGU，组氨酸CAU）