患儿,女,5岁。2岁时发现内斜视。检查:视力右眼0.3,左眼0.1。眼位:左眼+15

题型:单项选择题 共用题干题

问题:

患儿,女,5岁。2岁时发现内斜视。检查:视力右眼0.3,左眼0.1。眼位:左眼+15°。眼球运动各方向均不受限。眼底未发现明显异常。同视机检查不合作。睫状肌麻痹下验光结果为中度远视。

对于此类患儿,矫正眼位的方法是()

A.早期手术

B.如患儿不愿戴镜,可不戴镜观察

C.坚持戴屈光矫正眼镜

D.成人后手术

E.单眼遮盖

考点:眼科(医学高级)眼科综合练习眼科综合练习题库
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Modern industrial society grants little status to old people. In fact, such a society has a system of built-in obsolescence. There is no formal system for continuing our education throughout our life in order to keep up with rapidly changing knowledge. When our education and job skills have grown obsolete, we are treated exactly like those who have never gained an education or job skills and are not encouraged or given the opportunity to begin anew.As a society becomes more highly developed, the overall status of older people diminishes. Improved health technology creates a large pool of old people, who compete for jobs with the young. However, economic technology lowers the demand for workers and creates new jobs for which the skills of the aged are obsolete, forcing older people into retirement. At the same time, young people are being educated in the new technology and are keeping pace with rapid changes in knowledge. Finally, urbanization creates age-segregated neighborhoods. Because the old live on fixed incomes, they must often live in inferior housing. All these factors — retirement, obsolete knowledge and skills, inferior standards of living — lower the status of the aged in society.A century ago, when one could expect to live only to 50 or so, the life span more or less coincided with the occupation and family cycle. But today the average life span allows for fifteen to twenty years of life after these cycles. It appears that our life span is outpacing our usefulness in society.

The more highly developed a society is,________.

A.the more advanced technology will be

B.the larger the number of people will be

C.the more diminished old people’s status will be

D.the lower the overall status of the people will be

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引起错牙合畸形的原因很多,其中不良习惯和替牙障碍在错牙合畸形的形成和发展中起了重要作用。

第二乳磨牙早失,最易造成的错牙合畸形是()

A.下颌前突

B.深覆牙合

C.牙列拥挤

D.开牙合

E.下颌后缩

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小明同学为探究二氧化碳的性质,设计了下列实验.

(1)装置A中的实验现象是______,说明CO2具有的性质是______.

(2)装置B中倒入适量澄清的石灰水后,迅速拧紧软塑料瓶的瓶盖并振荡,实验现象是______,瓶内发生反应的化学方程式是______.

(3)取一朵用石蕊溶液染成紫色的干燥小花,将小花的一半用水喷湿,放入装置C中,可观察到的实验现象是______,此现象说明CO2具有的化学性质是______.

(4)小明在查阅资料时发现镁条能在CO2中燃烧,他在装置D中进行实验,发现镁条剧烈燃烧,发出白光,放热,产生一种白色固体和一种黑色固体,该反应中生成的白色固体是______.这个实验使你对燃烧条件产生的新认识是______.

题型:单项选择题 共用题干题

制动闸板为含有()的石棉橡胶制品

A、铝丝

B、铜丝

C、铁丝

D、钢丝

题型:单项选择题 共用题干题

患者,女,34岁,10年前因宫外孕手术输血 800ml,2年前体检HC标志物阳性,肝功正常,前天再次化验肝功结果是:ALT 56U/L,TBiL 15.5μmol/L,抗HCVIgG(+),HCV-RNA(+)。肝胆脾超声未见异常。

关于该患者目前治疗的首选方案是

A.促肝细胞生长素

B.转移因子

C.胸腺素

D.核苷类似物

E.干扰素加利巴韦林

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