财政部于1998年8月18日发行了2700亿元特别国债，所筹资金专项用于拨补四大国有

阅读理解。

     Yao Ming was born in China in 1980. He used to play for the Shanghai Sharks. In his last season, he scored 32. 4 points per game. Now the big man from China is

helping the Houston Rockets in the NBA. He is the son of two great basketball

players. He learnt how to play basketball when he was young. Now, as one of the

stars in the NBA, he is working hard to make his dream come true and shows the

world that Chinese basketball players love this game too.

1. Yao Ming first played basketball            

A. in China              

B. in the USA

C. in England            

D. in Australia

2. He could get        points if he took part in five games in his last season.

A. 161                 

B. 162

C. 81                    

D. 41

3. Yao Ming's parents are          .            

A. basketball players      

B football players

C. workers              

D. teachers

4. Yao Ming could play basketball well       

A. when he was in the NBA basketball match

B. when he went to America

C. when he joined the Houston Rockets

D. when he played for the Shanghai Sharks

5. Now Yao Ming is playing basketball in         

A. the USA                

B. England

C. France                

D. China

卤族元素的单质和化合物很多。

（1）卤素原子与氢原子形成的共价键中，极性最强键的是_____。NaF、MgF₂、SiF₄三种晶体的熔点从高到低的顺序是______。

（2）已知CsICl₂不稳定，受热易分解，倾向于生成晶格能更大的物质，则它按下列_____式发生。

A．CsICl₂=CsCl+ICl        B．CsICl₂=CsI+Cl₂

（3）CH₃Cl、BF₃、SCl₂三种分子中属于极性分子的是      ，ClO₂^-中心氯原子的杂化轨道类型为______，写出一种与SO₃^2－互为等电子体的分子       。

（4）已知CaF₂晶体（见图）的密度为ρg/cm³，N_A为阿伏加德罗常数，相邻最近的 两个Ca²⁺的核间距为a cm，则CaF₂的相对分子质量可以表示为___________。

依法属于国家所有的自然资源，所有权可以不登记，但在国家所有的土地、森林、海域等自然资源上设立用益物权、担保物权的，则需要登记才能生效。（）

以下各营养素中，（）不能提供热能。

A、糖

B、脂肪

C、蛋白质

D、维生素