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问题 多项选择题

公安消防部队实行等级战备制度，战备等级分为（）。

A、经常性战备

B、特级战备

C、一级战备

D、二级战备

E、三级战备

F、日常性战备

答案

参考答案：A, C, D

阅读理解
信息匹配； 左栏是一些人物的假期计划，右栏是一些旅行社的广告，请将人物与其感兴趣的广告进行匹配。
   
( ) 1. Mary likes animals very much. She wants to 
            see all animals can live in the wild happily.

( ) 2. Sally is going somewhere exciting. She wants to
            have fun with her friends.

( ) 3. Tony wants to go to a quiet place to relax
             himself.

( ) 4. Linda likes the famous writer Shen Congwen. 
             And she wants to know more about him.

( ) 5. After watching the movie Shaolin Temple, Jim     really want to see what a real Shaolin Temple is like.		A . A 2-day trip around the Qinghai Lake. 
      Enjoy the beautiful scenery of this salt lake in  
      West China.
B. Climb the Songshan Mountain in Henan and
     visit Shaolin Temple.
C. Come to the Wolong Nature Reserve and
     see the lovely pandas.
D. Have fun in the Happy Valley of Shenzhen.
     Many exciting games are waiting for you.
E. A 2-day trip to the ancient town of Lijiang.
     Relax yourself and enjoy the peaceful life here.
F. A 2-day trip to the ancient town of Phoenix.    You can visit the hometown of Shen Congwen.  
G. Come to Kenya and you'll see many different
kinds of animals in the wild.
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选择题

设NA为阿伏加德罗常数的值，下列叙述正确的是     （   ）

A．100mL 3.0mol/L的盐酸与5.6g铁屑完全反应转移的电子 数为0.3NA

B．含2mol H2SO4的浓硫酸与足量金属铜完全反应，产生SO2的数目为NA

C．1L 0.1mol/L Na2CO3溶液中，阴阳离子总数为0.3NA

D．16.0g的过氧（根）离子中含有的电子数为9NA
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