某医师欲比较不同穴位的镇痛效果有无差别，经随机抽样得下表：应使用的统计方法为（）。

企业绩效考核就是对企业生产任务在数量，人力资源考试质量及（）等方面完成情况的考核。

A.产量

B.效益

C.效率

D.效果

男，40岁。1周来因发热、咽痛、乏力、食欲减退、恶心、呕吐入院，体查：皮肤、巩膜黄染，腹平软，无压痛，肝右肋下1.5 cm有触痛，脾未扪及。血常规：白细胞5.2×10↑9／L，中性粒细胞0.48，血清总胆红素119.7μmol／L，胆红素68.4 μmol／L，ALT300 U／L，ALP 6.4 U／L，尿胆红素阳性，尿胆原阳性。应考虑的诊断是

A．急性黄疸型肝炎

B．胆囊炎，胆石症

C．肝癌

D．急性重症肝炎

E．淤胆型肝炎

In most people’s opinion, the tiger is not an animal that we would ordinarily think of as being chicken. However, one tiger, which lives in an English zoo, turned out to be more cowardly( 胆小的) than his keepers could ever have imagined.

Tanvir, a two-year-old Bengal tiger, got stuck at the top of a new 5m-high activity tower in the zoo, after climbing it for the first time.

The wooden tower had been designed to provide mental exercise for Tanvir by testing his ability of dealing with troublesome situations, but after climbing it in just a few seconds, he lost his courage when it came to coming back down. Tanvir went on to spend nearly two days at the top of the tower trying to collect the courage to attempt to get down.

A spokesperson for the zoo said that several days before Tanvir had taken half an hour to get down a lower tower only 1.5m high, and the taller tower had clearly been too much challenging for him.

“Every time he got to the edge, he looked out, put a paw over, and thought, ‘no, I cannot make it!’”laughed Samantha Cordrey, Tanvir’s keeper. In the end Tanvir’s hunger defeated his fear, and after almost 48 hours he made his way down. Burying himself in a big meal just like a hungry pig, Tanvir seemed to forget such a shameful experience for a while.

It appears that his experience would not be the worst in Tanvir’s life if he continued to act like a chicken. It is not known whether he will take courage to go back up his exercise tower again.

The whole episode(插曲) only serves to show the difficulties faced by zoo staff in creating environments that will improve animals’ living ability in enclosed space.

小题1:When speaking of Tanvir’s shameful experience, Samantha Cordrey might feel it was_____.

A．funny

B．surprising

C．exciting

D．unbelievable小题2:What made Tanvir get down the 5m-high activity tower at last?

A．The coldness of the weather.

B．The direction from his keepers.

C．The sufferings of being hungry

D．The fear of being alone小题3: Why does the author say “this experience would not be the worst in Tanvir’s life if…”(Paragraph 6)?

A．Because Tanvir’s keepers will design more difficult exercise for him.

B．Because Tanvir is so cowardly that he has little courage to meet greater

challenges.

C．Because Tanvir’s bad health will bring him much trouble in practice.

D．Because Tanvir is always careless and often causes trouble by accident.小题4: The zoo designed the 5m-high activity tower to______.

A．make Tanvir become brave

B．improve Tanvir’s performance skills

C．let tourists watch Tanvir better

D．improve Tanvir’s living ability

与X线产生无关的因素是

A．高速电子的动能
B．靶面物质
C．管电压
D．阴极加热电流
E．有效焦点大小