第三级预防的重点是 A．防止疾病发生 B．早发现、早诊断、早治疗 C．合理的诊断和护

N₂O明显抑制的组织器官有（）。

A.心、肺

B.血细胞

C.肝

D.肾上腺

E.骨髓

一架托盘天平砝码的质量和个数见下表，天平的游码标尺如图所示，调节该天平平衡后，用它称某物体的质量，将被测物体放在天平的左盘，在右盘中放入20g、10g和5g的砝码各一个后，横梁指针停在右图所示位置．问：

质量	100g	50g	20g	10g	5g
个数	1	1	2	1	1

（1）用下列哪一步骤可正确称出该物体的质量？

答______（填入选项前的字母）

A．将平衡螺钉母向左旋

B．将平衡螺母向右旋

C．将游码向右移一些

D．在天平右盘加一个砝码

（2）该物体质量可能在35g与______g之间，（选填：30、40或55）

妇女，35岁。孕3产2，普查发现盆腔包块3天就诊，无特殊不适，查外阴 * * (一)，宫颈光滑，大小质地正常，子宫前位，稍大，右侧扪及一个孕3个月大小包块，有囊性感，活动尚可。为进一步确诊下述哪项检查无意义

A．B型超声
B．血沉
C．腹部平片
D．乳酸脱氢酶
E．细胞学检查

阅读理解

     In the Caucasus Mountains of Russia, nearly fifty out of every one hundred thousand people live to

celebrate their hundredth birthday, and many don't stop at 100! By comparison, in America only three

in one hundred thousand people reach 100. But these Russian old people aren't alone. The Pakistanis,

who live in the Himalaya Mountains and the Ecuadorans of the Andes Mountains , seem to share the

secret of long life, too. These people remain healthy in body and spirit in spite of the passage of time.

While many persons in industrial societies become weak and ill in their 60s and 70s, some Caucasians,

aged 110 to 140, work in the fields beside their great grandchildren. Even the idea of aging is foreign to

them. When asked, "at what age does youth end?" most of these old people had no answer. Several

replied, "well perhaps at the age of 80," and the very youngest estimate was at the age of 60.

     What accounts for this ability to survive to such an old age, and to survive so well? First of all, hard

physical work is a way of life for all these long - lived people. They begin their long days of physical

labor as children and never seem to stop.

     All these people get healthful rewards from the environment in which they work. They all come from

mountainous regions. This reduced - oxygen environment makes the heart and blood vessel system

stronger.

     Another factor that may contribute to the good health of these people is their isolation. To a great

extent, they are separated from the pressures and worries of industrial society. Inherited(遗传的)factors

also play some role.

     It is clear that isolation from urban pressures and pollution, clean mountain air, daily hard work,

moderate diets, good genes, and a youthful approach to life all contribute to the health and long life of all

these people.

1. Why does the writer mention some long - lived people in the first paragraph?

A. To introduce the subject of the article.

B.  To surprise his readers.

C. To tell you the difference between people in the Soviet Union and America.

D. To tell you why Americans don't live as long as other people.

2. From the writer's viewpoint, industrial society         .

A. is highly developed and beneficial to people

B. is a great advance in human history

C. is full of pressures and therefore bad for people's health

D. can make people's life better and better

3. Which of the following is true according to the passage?

A. It is beneficial for people to work and live in industrial society.

B. People should relax themselves from high pressures of life in industrial society.

C. The more hard physical work you do, the more healthy you will be.

D. People's health mainly depends on inherited factors.

4. The following factors except _________ contribute to the health and long life of all these people. 

A. clean mountain air                    

B.  daily hard work

C. good genes                        

D.  stress and pressure

女性，34岁，阵发性腹痛4天，伴有恶心、呕吐，起病以来肛门未排便排气，3年前因 胆囊结石行胆囊切除术，正值月经中期。查体：脉搏120次/分，血压90/60mmHg，腹饱满，右侧腹部较对侧膨隆，有压痛、反跳痛及肌紧张。右下腹腔穿刺抽出少量暗红色液体。血红蛋白110g/L，最可能的诊断是

A．绞窄性肠梗阻
B．十二指肠溃疡穿孔
C．急性阑尾炎穿孔，腹膜炎
D．卵巢囊肿蒂扭转