当存在相邻建筑物时，新建建筑物与相邻建筑物的基础间应保持一定净距，其数值应根据原有建

This nice magazine _____ your brother.

A is belonged to  B belongs to C has been belonged to D is belonging to

青少年牙周炎

A．四环素

B．螺旋霉素

C．甲硝唑

D．青霉素

E．交沙霉素 下列疾病治疗时，若用抗生素治疗应首选的药物

Pocket Money

Most British parents give their teenagers pocket money. Teenagers get between ￡7 and ￡20 a week. They spend it on fast food， designed clothes， the cinema， concert， magazines and mobile phones.

1. Lazy parents？

37% of parents pay teenagers to clean the living room， 66% of parents pay teenagers to take the rubbish out.

2. Lazy teens？

51% of teenagers don’t make their beds before they leave home.

Only 13% of teenagers wash the car for money.

Some parents even pay their teenagers to do their homework.

3. Equality？ Not Yet！

Boys get more money than girls for most odd jobs.

For washing the dishes， boys get about ￡ 4 and girls get about ￡1.

4. And if you need some more money？

Teens get an extra ￡250 a year out of their parents on top of pocket money！

About 50% of teens get gifts of money from their grandparents.

Go to Mum if you need extra money！ She gives more than Dad.

5. Where you live makes a difference！

Parents in Scotland and the North of England give most pocket money.

6. Spending

51% spend their money on clothes.

39% buy cosmetics， jewellery and toiletries.

Less than 30% of teenagers save any money.

7. Earnings

Here are some children who tell us about their pocket money：

Emma： I get ￡30 a month， I have to take the rubbish out and tidy my room.

James： I get ￡10 a week. But I have to clean the car， hoover(用真空洗尘器清洗) the house and load and unload the dishwasher. I usually save the money.

Lain： I get ￡7. 50 a week. I have to be “good” but I don’t have to do any jobs for the money.

Richard： I get ￡5 a week. But our neighbors go away a lot and they give me ￡25 a week for looking after their cats.

52. This passage is mainly about　　　　.

A. teenagers everywhere get pocket money    B. how to spend pocket money

C. some bits about pocket money in Britain    D. how to get pocket money

53. According to the passage， which statement is true？

A. Parents are lazy so they let children do housework.

B. Teens are too lazy to do housework unless they are given pocket money.

C. The pocket money boys and girls get is not equal.

D. It is not right for children to ask for pocket money.

54. We can infer from the passage that　　　　.

A. boys earn more money at home than girls    B. girls earn more money at home than boys

C. only rich parents give children pocket money

D. most children spend their pocket money

55. Who most probably gets the most money for a whole year according to the passage？

A. Emma.           B. James.           C. Lain.             D. Richard.

辊涂法有手工和自动两种方法。

在一棵二叉树上第6层的结点数最多是______。