问题 问答题

(1)南京“青奥会”已进入倒计时,体育场馆和城市交通建设日臻完善.

①体育场馆建设需大量建筑材料.下列材料不属于硅酸盐材料的是______(填字母).

a.石灰石            b.水泥                c.玻璃

②轨道交通建设需大量金属材料.下列金属材料最易发生腐蚀的是______(填字母).

a.铝合金            b.钢铁                c.纯铜

(2)“青奥会”期间,要保障运动员的营养与健康.

①及时补充体能是运动员取得优秀成绩的基本保证.六大基本营养素中能在人体内氧化供能的有糖类、______和______.

②水果和蔬菜富含VC.已知VC的结构为,其分子式为

______;在氯化铁溶液中加入VC溶液后,溶液由黄色转变为浅绿色,说明VC具有较强的______性.中学生每天需补充约60mg维生素C,下列物质中含有丰富维生素C的是______.

a.辣椒b.鸡蛋c.米饭d.青霉素

③服用违禁药物不仅妨碍体育竞技的公平、公正,也有害运动员的身心健康.在阿司匹林、

青霉素、麻黄素、小苏打等常用药物中,参赛选手不可服用的是______.

(3)“绿水蓝天”工程为运动员提供优良环境,向世界展示古都南京的美好形象.

①人们常用______来表示空气的质量,它是根据空气中______、______、和可吸入颗粒等污染物的浓度计算出来的数值.

②PM2.5指悬浮于大气中的直径≤2.5μm(微米)的颗粒物,大量PM2.5会造成灰霾天气,危害人体健康.燃煤气化有助于控制PM2.5的含量,写出焦炭与水蒸气反应的化学方程式______.

③汽车尾气中含有污染大气的NO和CO.给汽车排气管加装“催化转化器”,可使CO和NO反应生成无毒无污染的气体,反应的化学方程式为______.

答案

(1)①硅酸盐材料包括玻璃、陶瓷、水泥,石灰石不属于硅酸盐材料,故答案为:a;     

②铝的活动性非常强,常温下即可与氧气反应,在表面形成致密的氧化铝薄膜,阻止进一步氧化,所以铝在空气中具有较强的抗腐蚀性;钢铁一形成原电池,加快腐蚀;铜不活泼不易被腐蚀,故答案为:b;

(2)①人体六大营养素分别是白质,糖类,油脂,维生素,水,无机盐;能在人体内氧化供能的有糖类、油脂和蛋白质,故答案为:油脂;蛋白质;

②根据结知分子式:C6H8O6,溶液由黄色转变为浅绿色说明三价铁被还原,维生素C有还原性,辣椒富含维生素C,鸡蛋富含蛋白质,米饭富含淀粉,青霉素是抗生素,

故答案为:C6H8O6;还原性;a;   

③青霉素是抗生素,麻黄素有兴奋作用,小苏打是抗酸药,故答案为:麻黄素;

(3))①人们常用空气污染指数  来表示空气的质量,它是根据空气中二氧化硫、二氧化氮、和可吸入颗粒等污染物的浓度计算出来的数值,

故答案为:空气污染指数;二氧化硫;二氧化氮;

②焦炭与水蒸气反应的化学方程式为C+H2

  △  
.
 
 CO+H2,故答案为:C+H2
  △  
.
 
 CO+H2

③CO和NO反应的化学方程式为2CO+2NO

 催化剂 
.
 
 N2+2CO2,故答案为:2CO+2NO
 催化剂 
.
 
 N2+2CO2

完形填空
完形填空
       Bill is fifteen now, but he's still in Grade One. He likes   1   and does not like to
use his   2  .He does not listen to the teachers in class and so he   3   his homework  His teachers do not
like him  They tell his parents about it,  but they do not   4_ what to do.
       It s Sunday today. Bill _5_ early in the morning. After breakfast,  his mother tells him to do his   6_.
He goes to his study. His mother is   7   with her housework.
Bill goes out with a ball. Now lunch is ready, but she   8  Bill. When Bill comes back,
his parents look very angry, but say nothing.
       After lunch Bill wants to go out again. His father stops him and asks,   "Have you finished your
homework? "
       "No,"answers the boy, "I can't do   9    ."
       His father pulls( 拉 ) him by the ear ana says,"   10   your ear? "
       "Oh,dear!  " Bill calls out ,"It's in your hand!
( )l. A. playing football    
( )2. A. hand                
( )3. A. can do              
( )4. A. have                
( )5. A. get up              
( )6. A. homework            
( )7. A. busy                
( )8. A. canfind            
( )9. A. they                
( )l0. A. Where              
B. to play the football  
B. pen                    
B. can not do            
B. think                  
B. gets up                
B. homeworks              
B. does                  
B. finds                  
B. them                  
B. Where's                
C. playing the football    
C. head                    
C. don't                    
C. know                    
C. stands up                
C. housework                
C. like                    
C. can'tfind                
C. it                      
C. What                    
选择题