Hello, boys and girls. My name is Kangkang. I’m from Tianjin. I’m No.1 middle school.
   My mother works in No.1 middle school. She teaches Chinese. My father is a doctor in a hospital. They both work hard.
   On Sunday my mother and I often do some shopping. My mother likes shopping a lot. We will go shopping this Sunday afternoon. My mother says she will buy me a red coat. But I don’t like red. I want a yellow one. My mother says yes to me. I am happy.
   My father doesn’t like shopping at all. He likes animals best. He often takes me to the zoo. My favorite animal is the panda. I think panda are very cute. This Sunday morning my father will go to the zoo with me.
   I love my parents very much. They love me, too. I have a happy family.

实验室配制500mL 0.1mol/L的Na₂SO₄溶液，实验操作步骤有：

A．继续向容量瓶中加蒸馏水至液面距刻度线1～2cm处，改用胶头滴管小心滴加蒸馏水至溶液凹液面最低处与刻度线相切．

B．把制得的溶液小心地转移到容量瓶中．

C．在天平上称出7.1g硫酸钠固体，把它放在烧杯中，用适量的蒸馏水使它完全溶解并冷却至室温．

D．用少量蒸馏水洗涤烧杯和玻璃棒2～3次，每次洗涤的液体都小心注入容量瓶，并轻轻振荡．

E．将容量瓶瓶塞塞紧，充分摇匀．请填写下列空白：

中国在1991年加入的亚洲太平洋地区最重要的政府间经济合作组织是（    ）

马克思说：“哪里君主制的原则是天经地义的，哪里就根本没有人了。……专制制度必然具有兽性，并且和人性是不相容的。”对该论述正确的理解是
① 君主专制是最典型的“人治”②君主专制具有残暴性

③君主专制极大地压制了“人性”④君主专制有害无利