《中国居民平衡膳食宝塔》中，所占比重最少的食物是（） A.谷类食物 B.蔬菜和水果

阅读理解。

     Two men, Alan and Henry, both seriously ill, shared a hospital room. Alan was allowed to sit up in his bed and his bed was next to the room's only window. Henry had to spend all his time flat on his back.

     The men talked for hours, of their wives, families, their homes and their jobs. And every afternoon

when Alan, in the bed next to the window, could sit up, he would pass the time by describing to his

roommate all the things he could see. Ducks and swans played on the water while children sailed their

model boats. Lovers walked arm in arm among flowers. Trees and skyline could be seen in the distance. As he described all these, Henry, on the other side of the room, would close his eyes and imagine the

scene.

     One warm afternoon Alan described a parade (游行) passing by. Although Henry could not

hear the band, he could see it in his mind. Unexpectedly, an alien  thought entered his head: Why should

he have all the pleasure of seeing everything while I never get to see anything? It doesn't seem fair. Henry

felt ashamed at first. But as the days passed and he missed seeing more sights, his envy grew and soon

let him down. He began to find himself unable to sleep. He should be by that window- and that thought

now control his life.

     Late one night, as he lay staring at the ceiling, Alan began to cough. He was choking. Henry watched

in the dim room as the struggling man tried hard to reach for the button to call for help. Listening from

across the room, he never moved, never pushed his own button which would have called for a nurse. In

less than five minutes, the coughing and choking stopped, along with the sound of breathing. Now, there

was only silence- deathly silence.

     As soon as it seemed appropriate, Henry asked if he could be moved next to the window. The nurse

was happy to make the switch and after making sure he was comfortable, she left him alone.

     Slowly, painfully, he struggled to take his first look. Finally, he would have the joy of seeing it all

himself. He would have the joy of seeing it all himself. He looked out, but faced a blank wall.

1. Judging from the passage, the meaning of the underlined word "alien" in Paragraph 3 is "_____ ".

A. disappointing

B. sudden

C. new

D. strange

2. What finally happened to Alan?

A. He was moved to another room.

B. He died.

C. He switched his bed with Henry.

D. He was very sick

3. Henry, who had his bed switched, had expected            .

A. to see the blank wall

B. to feel the joy of seeing the outside world

C. to feel the joy of breathing fresh air

D. to see more than Alan

4. Which of the following words could be used to describe Alan?

A. Kind-hearted and imaginative.

B. Well- informed and humorous

C. Talkative and funny

D. Cold-hearted and indifferent

蹦床运动是一种深受青年人喜爱的运动，当运动员从蹦床上弹起后在空中向上运动的过程中，其动能和重力势能的变化是

A．重力势能增大，动能减小

B．重力势能增大，动能增大

C．重力势能减小，动能减小　　　

D．重力势能减小，动能增大

不属于上下尿路感染的鉴别的是（）

A.性别

B.全身症状

C.尿渗透压

D.血清中抗"O"抗体

E.尿沉渣中抗体包裹细菌

药物依赖性产生的一般规律是

A．身体依赖性最早产生，然后产生精神依赖性，从而使身体依赖性进一步加重

B．精神依赖性最早产生，然后产生身体依赖性，从而使精神依赖性进一步加重

C．精神依赖性最早产生，然后产生身体依赖性，继而身体依赖性会进一步加重

D．身体依赖性最早产生，然后产生精神依赖性，继而精神依赖性会进一步加重

E．身体依赖性与精神依赖性同时产生

关系操作的特点是 【5】 操作。