问题 问答题 简答题

近视眼按屈光形成因素分为哪几类?

答案

参考答案:

轴性近视:眼球的前后加长

弯曲性近视:角膜、晶状体的前后面弯曲度增大

指数性近视:角膜、房水、晶状体、玻璃液屈光指数过高

调节性近视:因看近太久,睫状肌调节麻痹

选择题
阅读理解

阅读理解.

Long March exhibit

The Shanghai History Museum is putting on an exhibition to mark the 60th anniversary of

the Long March. On show are more than 220 photos and 40 items that explain with

pictures how the communist Red Army drew back from its besieged(被围困的)bases in

Jiangxi Province and fought its way to northern Shanxi province in the mid-1930s.

Explanations are all in Chinese. The show will end on November 20.

Time: 10:00 am-4:00 pm.

Address:

1286 Hongqiao Road

Admission:8 yuan for Chinese/ 15 yuan for foreigners

Thai elephants

Eight elephants from Thailand are entertaining visitors at Changfeng Park by riding bikes,

playing basketball, balancing on a beam, dancing and blowing a mouth-organ. People are

encouraged to have a tug-of-war(拔河比赛)with the animals or lie on the ground and have

the elephants walk over them. The elephants give three shows a day at 9:30 am, 3:30 pm

and 8:00 pm and there is an additional show at 1:30 pm at weekends. The show will end

on November 15.

Address:

189 Daduhe Road

Admission: 30-40 yuan

Dancing dolphins

Dolphins jumping from the water to touch a ball, swaying their bodies to music, kissing

people and doing math by tapping their tails have made the dolphinarium in Peace Park an

attraction for children. Seals and sea lions also perform.

Hours:10:30 am, 4:00 pm, and 7:30 pm

Admission: 20 yuan for adults and 10 yuan for children.

1. If you as well as your three children go to enjoy watching dolphins dancing, how

much will you pay altogether for the admission? ______.

A. 23 yuan

B. 40yuan

C. 30 yuan

D. 50 yuan

2. At the exhibition, you will see ________.

A. many articles written by famous writers

B. many things left by the Red Army

C. many photos and pictures about the Long Match.

D. books on the Long March

3. Which of the following is NOT done by the Thai elephants?______.

A. Riding bicycles.

B. Blowing a mouth-organ

C. Having a tug-of-war with people.

D. Doing math

4. The dolphinarium in Peace Park is a hall where you can see________.

A. only dolphins perform

B. only seals and sea lions perform

C. only seals perform

D. not only dolphins but also seals and sea lions perform