问题 问答题 简答题

正透镜对青少年近视眼有无作用?

答案

参考答案:

青少年近视眼发生率较高,据不同的病因学说,提出了各种各样的治疗和预防措施。有人认为过度、持续的调节是近视发生和发展原因,因此试图减少调节作用来预防近视发生,阻止近视的进展,方法有散瞳如用阿托品麻痹睫状肌,阻止调节作用。有人主张用凸透镜(正透镜)即戴+1.50度镜看书、写字来减少调节力,但必须在医生指导下应用,首先要散瞳验光了解屈光度,检查眼位、隐斜度。

完形填空
Norman Bethune is one of China’s most famous heroes, but he wasn’t Chinese—he was Canadian. He gave his life to helping the Chinese people Norman Bethune 1   born in 1890. He became a 2   in 1916, and he went to the front to look after injured soldiers in the First World War. He saw many soldiers die in the war. Later he invented new treatments to  3  soldiers, and medical tools to use outside hospital.
In 1938 he came to treat the Chinese soldiers in the mountains north of Yan’an. There were 4  doctors, so he had to work very hard. He opened hospitals to give treatment to local people and soldiers, and to train doctors and nurses. He also wrote books so that doctors could learn about new treatments.
Dr Bethune worked very hard without stopping to 5  . Once, he preformed operations   6  69 hours without stopping, and saved 112people. He   7  working in spite of cutting his hand during an operation. In the end, he died because he did not take care of his   8 .
Dr Bethune’s work with the Chinese soldiers made 9   a hero in China. There are books and films about him, and he is 10   remembered in both Canada and China.
小题1:
A.isB.wasC.has beenD.be
小题2:
A.doctorB.nurseC.teacherD.worker
小题3:
A.understandB.believeC.helpD.count
小题4:
A.littleB.fewC.muchD.many
小题5:
A.restB.actC.agreeD.think
小题6:
A.fromB.sinceC.withD.for
小题7:
A.allowedB.continuedC.forgotD.stopped
小题8:
A.faceB.legC.footD.hand
小题9:
A.hisB.heC.himD.one
小题10:
A.stillB.neverC.hardlyD.Regularly
单项选择题 B型题