男性，65岁，因左肺中央型肺癌行左全肺切除：术后2小时患者出现气急、大汗淋漓，阵发性

阅读理解。

     There are many wetlands in China and some of them have become the world’s important wetlands.

The Chinese Yellow Sea Wetlands are among them. They are in Yancheng, Jiangsu Province. They are

home for many different kinds of animals. The world’s largest Milu Deer Nature Reserve is in them. More

than 700 Milu deer live freely there.There are not many red-crowned cranes in the world,but every winter you can see some in the Red-crowned Crane Nature Reserve in the Yellow Sea Wetlands.

    The temperature in the wetlands is usully neither too high nor too low.There us a lot of rain and sunshine

,  too. They are really good places for wildlife. Offering(提供) food and home for some special kinds of

animals is not  the only reason why we need to protect wetlands. Wetlands are important because they

also prevent flood. But some people want to change the wetlands to make more space for farms and less

space for wildlife.

     Luckily , more and more people are beginning to realize the importance of wetlands and wildlife.Every year , on February 2nd , many activities are held to tell people more about wetlands.

1. The Chinese Yellow Sea Wetlands are in the _______of China.

A. east      

B. south    

C. west    

D. north

2. Usually the weather in the wetlands is _______

A. hot      

B. pleasant    

C. cold    

D. dry

3. The World Wetlands Day is  on _______

A. April 22      

B. June 25    

C. February 2  

D. March 22

4. We must protect wetlands because _______

A. they are home for wildlife  

B. they can offer food to animals

C. they can prevent flood      

D. all of the above

5. Some people want to change _______ to make more space for farms 

A. lands    

B. world      

C. wildlife    

D. wetlands

已知下列四个反应：

①2Na＋2H₂O===2NaOH＋H₂↑ ②2F₂＋2H₂O===4HF＋O₂

③Cl₂＋H₂O===HCl＋HClO ④C＋H₂O(g)CO＋H₂

试从氧化还原的角度，回答下列问题：

(1)水只作氧化剂的是________；

(2)水只作还原剂的是________；

(3)水既不作氧化剂又不作还原剂的是________。

下列反应中生成物的总能量大于反应物的总能量的是（   ）

A．铝粉与氧化铁的反应

B．氯化铵与Ba(OH)₂·8H₂O反应

C．锌片与稀硫酸反应

D．钠与冷水反应

可能大数据资源是中国最大的国家战略性资源，还是所有经济活动主体的（）。

A.核心战略资源

B.以上均不对

C.辅助战略资源

D.有力战略资源