简述缺氧沉淀物中的有机质的分解。

After a terrible electrical accident，which caused him to become both blind and deaf，the whole world became completely dark and quiet for Robert Edwards for almost ten years. The loss of sight and hearing threw him into such sorrow that he tried a few times to put an end to his life. His family，especially his wife，did their best to tend and comfort him and finally he regained the will to live.

One hot summer afternoon，he was taking a walk with a stick near his house when a thunderstorm started all at once. He stood under a large tree to avoid getting wet，but he was struck by the lightning. Witnesses thought he was dead but he woke up some 20 minutes later lying face down in muddy water at the base of the tree. He was trembling badly，but when he opened his eyes，he could hardly believe what he saw——a plough and a wall. When Mrs Edwards came running up to him，shouting to their neighbors to call for help，he could see her and hear her voice for the first time in nearly ten years.

The news of Robert regaining his sight and hearing quickly spread，and many doctors came to examine him. Most of them said that he regained his sight and hearing from the shock he got from the lightning. However，none of them could give a convincing answer as to why this should have happened. The only reasonable explanation given by one doctor was that，since Robert lost his sight and hearing as a result of sudden shock，perhaps，the only way for him to regain them was by another sudden shock.

小题1:The reason for Robert's attempts to kill himself was that________.

A．a terrible traffic accident happened to him

B．he had to live in a dark and silent world

C．he was struck by the lightning once more

D．nobody in the world cared about him小题2:What was Robert doing when he was struck by the lightning?

A．Sheltering for the rain under a tree.

B．Driving a car.

C．Taking a walk with a stick.

D．Lying on the ground.小题3:What did Robert see first when he regained his sight after the shock?

A．His wife.

B．His neighbours.

C．A plough and a wall.

D．Many doctors.小题4:Which of the following statements is NOT true?

A．Robert had been deaf and blind for nearly ten years.

B．Robert hid himself under the tree for 20 minutes.

C．Robert could hear his wife's shouting for help when he woke up.

D．The family's love helped Robert regain confidence to live.小题5:We can infer from the text that________.

A．there was no accurate explanation for Robert's recovery

B．many doctors came because Robert was badly injured

C．Robert's wife sent for doctors immediately after the shock

D．a sudden injury in the head led to Robert's recovery

患者男性，10岁。逐渐出现右侧肢体活动障碍，行走不稳，向右侧偏斜，饮水呛咳，并出现吞咽困难10个月。查体：左侧眼部以下面纹变浅，口角向右侧抬高。悬雍垂向右侧偏斜，双侧咽腭反射迟钝。右侧肢体肌力4级，肌张力稍高。头颅CT示后颅窝高密度圆形阴影，其内可见分层钙化，脑干受压向右后方移位，四脑室偏移

最可能的诊断是（）

A.脊索瘤

B.脑膜瘤

C.神经鞘瘤

D.巨型动脉瘤

E.颅咽管瘤

初期全胃肠外营养液中的葡萄糖与胰岛素的适宜比例是（）

A.5～6g：1U

B.6～7g：1U

C.8～10g：1U

D.12～15g：1U

E.15～20g：1U

执行下列程序段后
BUF DW 2152H，3416H，5731H，4684H
MOV BX，OFFSET BUF
MOV AL，3
XLAT
写出AL=______。

美国的量化宽松货币政策给全世界带来了（）的通货膨胀.

A.微妙

B.恶性

C.输出性

D.输入性