B

    Welcome to Can-I-Help-You. We offer different kinds of services to people in our community (社区). If you need any of the following services, please email us to zyyingyu@jks.net or telephone us.

Education

    Information on primary and middle schools. Tel: 2432-5678

Housing

    Information on buying or renting houses. Tel: 2432-5679

Out-of-school Activities

    Information on activities and services for children aged between 5 and 18. Tel: 2432-5348

Holiday Activities

    Different activities for families in different seasons. Tel: 2432-5172

Health

    Information on local health services, like hospitals and first aid. Tel: 2432-5533

Insurance (保险)

    Information on car insurance, life insurance, etc. Tel: 2432-5666

Markets

    Information on local supermarkets, farmers' markets and farms. Tel: 2432-5338

Entertainment (娱乐)

    Information on local places for fun, like cinemas and parks. Tel: 2432-5564

Before and After School Childcare

    Information on school-age childcare programs. Tel: 2432-5555

血液循环的原动力来自____。心脏的搏动推动血液在____和____所组成的管道系统中____。

4HCl（浓）+MnO₂ $\underset{\_}{\underset{\_}{\Delta }}$ Cl₂↑+MnCl₂+2H₂O

用下列实验室常用装置或仪器（铁架台、夹持和连接装置略）的字母填空．