问题 阅读理解

阅读理解。

  He is quiet and shy. He likes to hide his eyes behind his hair. He doesn't

smile very often. However,  if you talk to him about music, he'll have a lot to say.                  This is Jay Chou, the 24-year-old Taiwanese pop king(天王). His fans are

so excited because he will sing songs in Beijing on September 12. Those songs

are from his new album (唱片), "Ye Huimei", and the album was released

(发行) in July and was named after his mother.

  Chou grew up just with his mother. He did not talk much and did badly in

many school subjects.

  His mother noticed the boy's special interest in music and sent him to learn

piano when he was only three years old. He loved it and kept on practicing.

  Chou is not very handsome. He does not speak clearly when he sings or

talks. But the singer has huge crowds of fans. "He is really good at music. It

makes him attractive(有魅力的) to me, " said Liu Jiajun,  a Junior 2 student in

No. 101 Middle School in Beijing.

  "He is true to himself. He never follows others, "said Zhang Yujie, a Junior

1 girl at Huaibei Middle School in Sihong, Jiangsu Provice.

1. From this passage, we know that Jay Chou _____.

A. is very handsome            

B. has a bright smile

C. often makes too much noise    

D. is a pop music star

2. His fans are so excited because _____.

A. he released a new album in July  

B. he will sing new songs in Beijing

C. he can play the piano very well

D. his new album was named after his mother

3. When he was a little child, he _____.

A. talked a lot every day    

B. did well in his study at school

C. started to like music      

D. had huge crowds of fans

4. According to one of his fans, Jay _____.

A. is a good student        

B. has long and beautiful hair

C. is a well-known pianist    

D. is very attractive to them

5. The sentence "He never follows others" in the last paragraph means _____.

A. he always has his own style            

B. he likes to walk alone

C. he doesn't like other people's songs at all  

D. no one can catch up with him

答案

1-5 DBCDA

选择题

Ⅰ.800℃时,向容积为2L的恒容密闭容器中充入一定量的CO和H2O维持恒温,发生反应CO(g)+H2O(g)H2(g)+CO2(g),反应过程中测定的部分数据见下表:

反应时间/min0246
n(CO)/mol1.200.90 0.80
n(H2O)/ mol0.60 0.20 
 

①反应在2 min内的平均速率为v(H2O)=___________;

②800℃时,化学平衡常数K的值为_______________;

③保持其他条件不变,向平衡体系中再通入0.20 mol H2O,与原平衡相比,达到新平衡时CO转化率______(填“增大”或“减小”或“不变”)。

④在恒温恒压密闭容器中通入CO和H2O各1 mol发生该反应,当反应达到平衡后,维持温度与压强不变,t1时再通入各1 mol的CO和H2O的混合气体,请在右图中画出正(v)、逆(v)反应速率在t1后随时间t变化的曲线图。

Ⅱ.实验室中利用复分解反应制取Mg(OH)2。实验数据和现象如下表所示(溶液体积均取用1mL):

组别药品1药品2实验现象
I0.01 mol/L NaOH溶液0.01 mol/L MgCl2溶液生成白色沉淀
II0.01 mol/L氨水0.01 mol/L MgCl2溶液无现象
III0.1 mol/L氨水0.1  mol/L MgCl2溶液现象III
IV0.1 mol/L氨水0.01 mol/L MgCl2溶液生成白色沉淀
V0.01 mol/L氨水0.1 mol/L MgCl2溶液无现象
 

①现象III是             

②如果向0.028 mol/L的MgCl2溶液中加入等体积的NaOH溶液,请计算NaOH溶液的浓度至少达到

         mol/L时,溶液中开始出现白色沉淀(Ksp(Mg(OH)2)= 5.6×10-12)。

③MgCl2溶液和氨水混合后存在下列化学平衡:Mg2+(aq) + 2NH3·H2O(aq)2NH4+(aq) + Mg(OH)2(s)该反应化学平衡常数的表达式为K=                     ,列出该反应平衡常数K与Kb(NH3·H2O)、Ksp(Mg(OH)2)的关系式             

问答题