钻井过程中，钻井液流动产生的环空压耗，使井底压力（）。A.不变 B.减小 C.增大

质量为m的物体从A点静止开始在水平拉力F的作用下，在粗糙的水平面上做加速度为a的匀加速直线运动，经时间t由运动到B点。则下列说法正确的是（   ）

A．在运动时间t内合外力的功率为ma²t / 2

B．物体运动到B点时拉力的功率为Fat /2

C．物体运动到B点时摩擦力的功率为Fat-ma²t

D．物体运动到B点时摩擦力的功率为Fat - ma²t / 2

山药具有的作用是（）。

A.益气养阴

B.缓急止痛

C.既补脾肺肾之气，又补脾肺肾之阴

D.涩精止带

E.固经止血

病历摘要：男性患者，45岁，因饱餐后突发上腹部疼痛10h入院。疼痛呈持续性绞痛，拒按，伴恶心、呕吐，呕出胃内容物及黄水。1h前出现手足抽搐。小便量减少。既往无上腹部疼痛病史。入院查体：T38.6℃，BP90／60mmHg，P110次／min，R20次／min。痛苦面容，皮肤巩膜无黄染。心率110次／min，心肺余无异常，肠鸣音1次／min。

常用的护理诊断有哪些？（）（提示：化验结果为血淀粉酶96μg／L，血象WBC12×109／L，N87％，L13％，Hb：120g／L。在B超引导下行腹腔穿刺术，抽出10ml血性液体，化验淀粉酶为3600U／L，此时医疗诊断为急性出血坏死性胰腺炎）

A.疼痛，腹痛

B.体液不足的危险

C.低效性呼吸型态

D.体温过高

E.心输出量减少

F.清理呼吸道无效

G.便秘

In a moment of personal crisis, how much help can you expect from a New York taxi driver? I began studying this question and answers are interesting.

One morning, I got into three different taxis and announced，“Well，it's my first day back in New York in seven years.I've been in prison.”Not a single driver replied，so I tried again.“Yeah，I shot a man in Reno.”I explained, hoping the driver would ask me why, but nobody asked.The only response came from a Ghanaian driver，“Reno? That is in Nevada？”

Taxi drivers were uniform sympathetic when I said I'd just been fired.“This is America，”a Haitian driver said.“One door is closed.Another is open.”He argued against my plan to burn down my boss' s house.A Pakistani driver even turned down a chance to profit from my loss of hope；he refused to take me to the middle of the George Washington Bridge—a $20 trip.“Why do you want to go there? Go home and relax.Don't worry.Take a new job.”

One very hot weekday in July, while wearing a red ski mask and holding a stuffed pillowcase with the word “BANK” on it, I tried calling a taxi five times outside different banks.The driver picked me up every time.My ride with a Haitian driver was typical of the superb assistance I received.

“Let's go across the park，” I said.“I just robbed the bank there.I got $25,000.”

“$25,000？” he asked.

“Yeah，you think it was wrong to take it？”

“No, man.I work 8 hours and I don't make almost $70.If I can do that，I will do it too.”

As we approached 86th and Lexington, I pointed to the Chemical Bank.

“Hey，there is another bank，”I said，“Could you wait here a minute while I go inside？”

“No，I can't wait.Pay me now.” His unwillingness may have had something to do with money—taxi drivers think the rate for waiting time is too low—but I think he wanted me to learn that even a bank robber can't expect unconditional support.

小题1:From the Ghanaian driver's response, we can infer that________.

A．he was afraid of the author

B．he thought the author was crazy

C．he looked down upon the author

D．he was indifferent to the killing小题2:Why did the Pakistani driver refuse to take the author to the middle of the George Washington Bridge?

A．Because he was able to help the author to find a new job.

B．Because he wanted to go home and relax.

C．Because he thought that the author would commit suicide.

D．Because it was far away from his home.小题3:In the author's opinion, the driver's unwillingness to wait outside the Chemical Bank indicates________.

A．the driver thought it wrong to support a taxi rider unconditionally

B．the driver was frightened and wanted to leave him as soon as possible

C．the driver did not want to help a suspect to escape from a bank robbery

D．the driver thought that the rate for waiting time was too low小题4:Which of the following statements is TRUE about New York taxi drivers?

A．They are ready to help you do whatever you want to.

B．They are sympathetic with those who are out of work.

C．They refuse to pick up those who would kill themselves.

D．They work only for money.小题5:The passage mainly discusses________.

A．the way to please taxi riders

B．the way to deal with taxi riders

C．taxi drivers' attitude to riders in personal trouble

D．taxi drivers' attitude to troublesome taxi riders

点击率是影响关键词质量的最重要因素