将方程5x-2y=1变形为用x的代数式表示y的形式，则y=______．

阅读理解。

     Do teenagers in small villages do chores at home? How about the teenagers in big cities?

     Here is a survey. We asked 4,000 teenagers in China several questions. Half of them come from big

cities like Beijing, Shanghai and Guangzhou.The others are from small villages. We made a diagram of the

result of our survey. Let's have a look at it.

     We found out that teenagers from small villages do more chores than those from big cities.  Maybe it

is because they live a harder life.Our advice to parents in big cities is that parents should give their children some chores to do. Doing chores teaches teenagers to take care of themselves.

1. They surveyed ______ teenagers from small villages.

A. 1,000      

B. 2,000      

C. 4,000      

D. 3,000

2.There are l,000 teenagers from the cities who______.

A. take out the trash    

B.do the dishes

C. make the bed    

D.fold the clothes

3. Fewer than______teenagers in big cities sweep the floor and make the bed.

A. 500    

B.1,000    

C.1,500    

D.2,000

4. The number of teenagers______in big cities is bigger than that in small villages.

A. making the bed    

B.taking out the trash

C. folding the clothes    

D.doing the dishes

5. Why did they make the survey?

A. Because they don't want teenagers in China to do chores at home.

B. Because they thought it'Il help teenagers to take good care of themselves to do chores at home.

C. Because they wanted to know if teenagers in China do chores at home.

D. Because they thought it's not necessary for teenagers to look after themselves.

环磷酰胺的主要不良反应是

A．心脏毒性
B．肾脏毒性
C．肺脏毒性
D．骨髓毒性
E．皮肤毒性

汉语中一些量词形象生动，富有韵味。阅读下面的例句，从备选例子中选择两个量词加以揣摩赏析。（6分）

泓：一“泓”清泉。清澈的泉水从泉眼中流出，是那样充盈而明亮。它不仅写出了泉水水量的充沛，而且写出了泉水水质的明净。

备选例子：一“挂”飞瀑、一“叶”扁舟、一“钩”新月

阅读下面的资料，回答后面的问题：
山东寿光市孙家集三元朱村党支部书记王乐义带领农民走农业产业化道路，使三元朱村成为全国闻名的小康村和新农村建设的一面旗帜。王乐义具有强烈的创新精神和致富能力。1989年，他率先试验成功了日光温室蔬菜种植生产技术，并引发了寿光乃至全国的蔬菜“绿色革命”。2001年，三元朱村成立德农三元绿色农业有限公司，走出了公司连基地、基地连农户、统一管理、统一收购、统一销售的新的产业化之路，产品走俏国内外市场。王乐义还具有强烈的共同致富的意识和带富能力。1990年，寿光成立了冬暖式日光蔬菜大棚小组，王乐义担任技术总指导，并在27个乡镇巡回指导，当年全县新建的5130个冬暖式日光蔬菜大棚全部成功，增收6000万元。寿光的新式蔬菜大棚现在已发展到40万个，形成了全国最大的蔬菜交易市场。王乐义和他带领的三元朱村技术员队伍还走向全省，走向全国。用王乐义本人的话说就是：“一村富了不算富，农民兄弟都富了才算富”。

王乐义带领农民走上致富之路的启示是( )。

A．全村要致富，关键要有好带头人

B．只要有个好带头人，全村农民就能致富

C．要带领全村农民致富，必须要有新思路

D．带头人是科技能手，才能带领农民致富

烤苗