一根细绳围成一个长方形，长18厘米，宽10厘米。如果把它改围成一个正方形，它的边

阅读短文回答问题。

     Jolanda Maas, a leader of a research at the Nivel Institute in Utrecht, has reported the result of the study in

the magazine BioIMed Cen,tral Public Health. It says that people who live closest to green areas in the

countryside walk and cycle less often for shor- ter time than other people.

   " We found that there was either no relationship or only a small one between green space and physical

activity," said Maas."People with more green space walk and cycle less often in their spare time."

     People with 20% of green space walked around 250 minutes each week during their spare time compared

to 180 minutes for those with 80% of green space.

   "This may be because people in the countryside need to use their cars more to get to places such as shops,

schools and the doctor's office," Maas said. Living near green space also makes no difference in whether

people met NHR (全身健民标准) to get 30 minutes of exercise daily, according to a survey (调查) of 5000

people across the Netherlands (荷兰). "

    The study shows when you just look at how much green space people have,

it is not true people are just more physically active," Maas said."This study shows you don't really need green

space."

1. Is Jolanda Maas the leader of the research? 

   __________________________________________

2. Who walk less,people with 20% or 80% of green space?

   ___________________________________________

3. How do people in the countryside go to shops, schools and the doctor's?

   ___________________________________________

4. How long are people advised to exercise daily? 

  ____________________________________________

5. What does the writer really want to tell us? 

  ____________________________________________

一只乒乓球拍15元，如果买2副这样的乒乓球拍，一共需要______元．

下列对物体带电现象的叙述正确的是（  ）

A．物体带电一定具有多余的电子

B．摩擦起电能创造电荷使原来不带电的物体带电

C．物体所带电量可能很小，甚至小于e

D．同种电荷相互排斥，异种电荷相互吸引

阅读园地。

　　在延安的时候，有一天中午刚过，毛 * * 同志坐汽车到中央医院去看望正在养病的八路军一二O师政委关向应同志。     

　　到了医院，为了不影响病人的休息，毛 * * 同志把脚步放得很轻，小心地推开病房门，慢慢地走向病床。关向应同志一看毛 * * 来了，急忙坐了起来。毛 * * 同志赶快上前，一把握住关向应的手，亲切地问：“身体好些了吗？”“好多了！”关向应激动地回答。两人正亲切地说着话，忽然从门外走进来一个穿着洁白的工作服、戴着白帽子的小姑娘，强烈的责任感使她顾不得多想，就走到毛 * * 面前说：“同志，对不起，医生吩咐说病人需要安静，现在不能会客。”     

　　“噢，对不起，我不知道医生有这个吩咐。”毛 * * 谦和地微笑着说，随后轻轻走出痛庆。     

　　后来，护士才知道他是毛 * * 。毛 * * 同志严，守制度的精神，深深地印在她的心中。 1．当毛 * * 听到护士的话时，他是怎么说的，怎么做的（用原文语句回答）？

____________________________________________

2．本文写了一件什么事？ 

____________________________________________ 

3．给短文加个恰当的题目，写在文前的横线上。

4．读了本文后，你有什么感受？写下来。

____________________________________________

下列事实中，能用勒沙特列原理来解释的是

A．由H₂(g)、I₂(g)、HI(g)组成的混合气体平衡体系加压后颜色加深

B．久置的氯水变成了稀盐酸

C．在FeCl₃溶液中加入铁粉防止氧化变质

D．加入催化剂有利于SO₂与O₂反应制SO₃