腹泻脱水患儿经补液治疗后已排尿，按医嘱继续补液，400ml溶液中加入10%氯化钾的量

A与B签订了有定金条款的房屋买卖合同，合同签订三日后A向B实际交付了定金。下列说法正确的是( )。

A．房屋买卖合同于签订时生效，定金合同于实际交付定金时生效
B．定金合同于签订时生效，房屋买卖合同于实际交付定金时生效
C．房屋买卖合同及定金合同均于实际交付定金时生效
D．房屋买卖合同及定金合同均于合同签订时生效

阅读理解。

     In China, many students spend their weekends studying at school or doing homework or watching TV

plays at home. What are the students doing on weekends in America?

     Kevin: We are washing people's cars. My friends and I are working together. The money we get is

for our school volleyball team.

     Jane: I am in a children's center.  I am helping look after some small children.  I teach them to sing

and dance. Sometimes I teach them to sing pop songs.

     Tony: I'm walking with my grandmother around the park. My parents are working today. We're

playing and talking. She and I are good friends. She's telling me interesting stories.

     Kitty: I'm at home, but I am not watching TV. I'm babysitting my younger sister. She is three months

old. My parents are working. I look after my sister well.  I love my family.

1. In China, most students study at school, ________or________.

2. Kevin is washing cars to get ________ for the school volleyball team.

3. Jane is helping ________ the children in the children's center.  She teaches them to sing songs.

4. Tony is ________ around the park,

5. Kitty is ________ at home.

在调查某宗待开发土地的基本情况时，主要调查的方面包括( )。

A．土地的位置

B．土地的面积、大小、形状、地质和水文状况、平整程度

C．城市规划条件

D．土地的权利

E．土地的开发成本

信息加工的行为倾向性中非决定因素（）

A.趣味

B.需要

C.期待

D.价值

宅基地使用权是经依法审批由农村集体经济组织分配给其成员用于建造住宅的( )限制的集体土地使用权。

A．50年使用年期

B．60年使用年期

C．没有使用期限

D．70年使用年期