问题 问答题

“太湖美,美就美在太湖水”.据报导太湖上有近百只餐饮船.为了检测这些船只排放的废水是否达到标准,请你取废水样品设计以下实验:

(1)在实验室中可用______方法除去废水中的固体杂质,所需的玻璃仪器有______、______和烧杯.

(2)用______就可简便的测出废水的酸碱度.

(3)为了保护太湖的生态环境,下列措施可行的是______(填序号)

①禁止放养鱼虾;②控制餐饮船只总量;③在湖区大量修建宾馆饭店;④生活污水和工业废水处理达标后排放.

答案

(1)固体是除去不溶性固体的一种方法,所以除去废水中的固体杂质用过滤的方法;过滤时用到的玻璃仪器有烧杯、漏斗、玻璃棒;

故答案为:过滤;玻璃棒、漏斗;

(2)测定溶液的酸碱度可用pH试纸;

故答案为:pH试纸;

(3)②控制餐饮船只总量和④生活污水和工业废水处理达标后排放可以减少对水体的污染,从而保护太湖的生态环境;①禁止放养鱼虾不利于保护太湖的生态环境,③在湖区大量修建宾馆饭店,会增加排放入太湖的生活污水等物质,不利于保护太湖的生态环境;

故选②④.

阅读理解

阅读理解

     SOUTHPORT, ENGLAND-A British teaching union famous for strange ideas has supported

proposal to employ dogs as classroom assistants.

     At the annual conference of the Professional Association of Teachers in Southport, northwest

of England, one person suggested properly trained dogs be able to keep order in primary schools.

They can round up lost children and protect those who experience unfortunate "accidents". Wendy

Dyble, a Shetland Islands woman who teaches children up to age seven, made it clear to her fellow

friends that she was not  "barking mad". They obviously believed her, supporting her idea by 16

votes to 13, with a total of 63 abstentions (弃权).

     She said big dogs could help round up children, keep  them in line, lick up the milk they spill on

the floor and provide the extra eyes that a teacher needs to keep order."A big dog would also be

helpful in breaking up fights and looking for lost property, like gym shoes or dolls, " Dyble said at

the conference."The dog will also be useful in sniffing out smells that children do not own up to, "

she added."It would be nice for the teacher not to have to go round sniffing each child to find the

culprit (犯错的人). "

     The idea was greeted by the Dog Defense League but less so by bigger teaching unions.A

spokesman for Education Secretary David Blunkett, who is blind, said his guide dog was always

popular with pupils when he visited schools.The Professional Association of Teachers, with around

35,000 members, is the smallest teaching union in Britain.It has an honour for occasional strange

ideas.

     Earlier this week, its annual conference here suggested stopping exams because they lead to stress

and introducing selection at the age of 12 based on physical coordination and manual skill in the use

of hand.

1. According to the writer's opinion, to employ dogs as classroom assistants________.

A. is a wonderful idea

B. can improve the relation between children and animals

C. is beyond ordinary people's minds

D. can make some teachers lose jobs

2. What Dyble said at the conference________.

A. gained some support from the members

B. frightened everyone at the conference

C. interested everyone at the conference

D. caused some trouble to trained dogs

3. A spokesman for Education Secretary________.

A. once used a dog as a classroom assistant

B. sang high praise for Dyble' s idea

C. would employ dogs as teachers

D. benefited much from dogs

4. The last paragraph of this passage________.

A. has nothing to do with the topic of this passage

B. shows there are too many exams in British schools

C. provides further facts about the teaching union

D. shows the writer's anger to the union

单项选择题