患儿男，11岁，因天热在河中游泳，突然沉入水中，救上岸时发现呼吸、心跳均停止。此时除

有时候，将氧化还原方程式拆开写成两个“半反应”。下面是一个“半反应”式：

(    )+(    )H⁺+(    )e^-="===(   " )NO+(    )H₂O，该式的配平系数是（   ）

A．1，3，4，2，1

B．2，4，3，2，1

C．1，6，5，1，3

D．1，4，3，1，2

常温下，把pH＝11的NaOH溶液与pH＝3的醋酸溶液等体积混合，在所得溶液中离子浓度大小关系正确的是（  ）

A．c(CH₃COO^－)＞c(Na^＋)＞c(H^＋)＞c(OH^－)

B．c(Na^＋)＋c(H^＋)＞c(CH₃COO^－)＋c(OH^－)

C．c(CH₃COO^－)＞c(Na^＋)＞c(H^＋)＝c(OH^－)

D．c(Na^＋)＞c(CH₃COO^－)＞c(OH^－)＞c(H^＋)

头颅后前位摄影，要求标准正位体现出

A．影像的放大

B．影像的重叠

C．影像的切线效果

D．影像的三维显示

E．影像的对称关系

井下作业场所的“三图一表”的表是()。

A.作业人员表 

B.运输线路图表 

C.爆破作业图表 

D.施工进度及已完成工作量表

I just finished the household chores for the night and was preparing to go to bed, when I heard a noise in the front of the house. I opened the door to the front room and to my surprise, Santa himself stepped out from behind the Christmas tree.

He placed his finger over his mouth so I would not cry out. “What are you doing?” I started to ask. The words choked up in my throat, and I saw he had tears in his eyes. His usual jolly manner was gone. Gone was the eager, boisterous soul we all know.

He then answered me with a simple statement“TEACH THE CHILDREN！”

I was puzzled; what did he mean?

Santa then reached in his bag and pulled out a FIR(杉木) TREE .“Teach the children that the pure green color of the stately fir tree remains green all year round，describing the everlasting hope of mankind，all the needles point heavenward, making it a symbol of man's thoughts turning toward heaven.”

He again reached into his bag and pulled out a brilliant STAR. “Teach the children that the star was the heavenly sign of promises long ago. God promised a savior(救世主) for the world, and the star was the sign of fulfillment of his promise.”

He then reached into his bag and pulled out a CANDLE. “Teach the children that the candle symbolizes that Christ is the light of the world, and when we see this great light we are reminded of he who displaces(取代) the darkness.”

Suddenly I heard a soft twinkling sound, and from his bag he pulled out a BELL. “Teach the children that as the lost sheep are found by the sound of the bell, it should ring mankind to the fold. The bell symbolizes guidance and return.”

Santa looked back and was pleased. I saw that the twinkle was back in his eyes. He said, “Remember, teach the children the true meaning of Christmas and do not put me in the center, for I am but an humble servant of the one that is, and I bow down to worship HIM, our LORD, our GOD.”

小题1:Author opened the door when he was going to sleep because________.

A．he heard something unusual

B．he was not sleeping at the moment

C．he saw the Santa at the moment

D．he wanted to step out of the room小题2:According to Santa, the star was ________.

A．a symbol of man's thoughts turning towards heaven

B．the sigh of fulfillment of the Santa's promise

C．the symbol of the light of the world

D．the sound of the bell which ring mankind to the fold小题3:What does the underlined word “twinkle” refer to?

A．Tears.

B．Smiles.

C．Glasses.

D．Eyes.