珍珠的化学成分是：（） A.碳酸钙 B.氨基酸 C.牛磺酸 D.微量元素 E.角壳蛋

超短效苯二氮类药物（）。

A.三唑仑

B.艾司唑仑

C.劳拉西泮

D.硝西泮

E.阿普唑仑

以井位所在的十万分之一分幅地形图为基本单元命名或以二级构造带名称命名的井为（）。

A、预探井

B、参数并

C、评价井

D、开发井

男性，70岁，咳嗽、咳痰伴喘息20余年，加重1周，2天来高热嗜睡。查体：嗜睡、球结膜水肿，皮肤红润，唇发绀不著，BP170/97mmHg，呼吸30次/分，脉搏120次/分，无颈静脉怒张，双肺可闻干湿啰音，心脏不大，肝脾未触及，双下肢轻度凹陷性水肿，双侧腱反射减弱。WBC12.8×10/L，N82%。

以下处理不正确的是()

A．通畅气道

B．低浓度持续吸氧

C．抗感染治疗

D．尽早使用利尿剂减轻脑水肿

E．应用呼吸兴奋剂

阅读理解。

     If you can read a clock, you can know the time of the day. But no one knows what time itself is. One

way to think about time is to imagine a world without time. But there could be no movement, because time and movement cannot be separated.

     In early human history, the only changes that seemed to repeat themselves evenly were the movements of objects in the sky. The most easily seen result of these movements was the difference between light and darkness. The sun rises in the eastern sky, producing light. It moves across the sky and sinks in the west,

causing darkness. The appearance and disappearance of the sun was even and unfailing. The periods of

light and darkness it created were the first accepted periods of time. We have named each period of light

and darkness one day. People saw the sun rise higher in the sky during the summer than in winter. They

counted the days that passed from the sun’s highest position until it returned to that position. They counted 365 days. We now know that is the time Earth takes to move once around the sun. We call this period of

time a year.

     They also developed a way to use the changing faces of the moon to tell time. The moon was “full”

when its face was bright and round. The early humans counted the number of times the sun appeared

between full moons. They learned that this number always remained the same---about 29 suns. We now

know this period of time as one month.

     Early humans hunted animals and gathered wild plants. They moved in groups or tribes form place to

place in search of good. Then, people learned to plant seeds and grow crops. As hunters, people did not

need a way to measure time. As farmers, however, they had to plant crops in time to harvest them before winter. They had to know when the seasons would change. So, they developed calendars.

     No one knows when the first calendar was developed. But it seems possible that it was based on

moons, or lunar months.

1. The underlined word “unfailing” (in para.2) is closest in meaning to "_____".

A. reliable    

B. everlasting

C. limited

D. changing

2. Which of the following is NOT the method early people used to tell time?

A. Sun position    

B. Sun lightness

C. Moon shape

D. Planting crops

3. Why did people invent the first calendar to measure time?

A. Because early humans hunted animals and gathered wild plants.

B. Because early farmers had to grow and harvest crops in time.

C. Because early people had to search for food in groups.

D. Because early humans moved in groups or tribes from place to place.

4. Which of the following is TRUE?

A. Why early people developed calendars is not clear

B. When the first calendar was developed remains unknown.

C. What early people based the first calendar on is certain.

D. How early people counted a day is still unknown.

5. It can be concluded from the text that ______.

A. time and movement are loosely related even at present days

B. the light and darkness differences of the sun were the only movements in sky

C. the period of twenty-nine suns is called one month

D. early humans first accepted periods of time created by the moon.

已知类A有公用数据成员a，且有A obj2；A * const ptr=new A；则下列语句正确的是

A．ptr-＞a＝100；

B．ptr=&obj2；

C．ptr++；

D．ptr＝obj2；