问题 选择题

人能够看清远近不同的物体,主要起调节作用的是(  )

A.虹膜

B.睫状体

C.瞳孔

D.跟球外的肌肉

答案

眼球分为眼球壁和内容物.眼球壁分为外膜、中膜和内膜.外膜包括角膜和巩膜,角膜无色透明便于光线通过,巩膜是一层结缔组织膜,具有保护内部结构的作用;中膜包括虹膜、睫状体和脉络膜,虹膜内有色素,眼球的颜色就是由它来决定的,睫状体内有平滑肌,通过平滑肌的收缩和舒张来调节晶状体的曲度,从而使眼睛能够看清远近不同的物体;内膜视网膜上有感光细胞,接受物像的刺激可以产生神经冲动,属于视觉感受器.所以对于正常人来说,不论较近或较远的物体,都能使物像落在视网膜上被看清,主要是因为晶状体的曲度可以通过睫状体的收缩和舒张来调节.

故选:B.

选择题
写作题

第二节 读写任务 (共1小题, 满分25 分)

阅读下面的短文,然后按照要求写一篇150词左右的英语短文。

There was a man who had four sons. He wanted his sons to learn not to judge things too quickly. So he sent them each to go and look at a pear tree that was a great distance away. The first son went in winter, the second in the spring, the third in the summer and the youngest son in the fall.

When they all had gone and returned, he called them together to describe what they had seen. The first son said the tree was ugly and twisted. The second son said no, it was covered with green buds ad full of promise. The third son disagreed, he said it was filled with blossoms that smelled so sweet and looked so beautiful that it was the most graceful things he had ever seen. The last son disagreed with all of them, insisting that it was ripe and drooping with fruit, full of life and satisfaction.

The man then explained to his sons that they were all right, because they had seen but one season in the tree’s life. He told them that you cannot judge a tree, or a person, by one season. If you give up when it’s winter, you’ll miss the promise of your spring, the beauty of your summer, and satisfaction of your fall.

Don’t let the pain of one season destroy the joy of all the rest!

[写作内容]

请用30词概括故事中四个孩子对梨树的描述。

2.请用120词以Do not make haste in judgment为主题完成以下写作任务:

(1)谈谈你对上面的故事的理解,你听过类似的故事或有过相关的经历吗?简单讲述一个类似的故事。

(2)谈谈你自己对此类故事的感想,例如,明白培养自己全面客观的人生态度的重要性,面对困境时,勇于坚持;面对矛盾时,善于易地而处……(可自由发挥)

[写作要求]

1. 可以使用自己的经历或听到的故事,可以参照阅读材料的内容, 但不得直接引用原文中的句子。

[评分标准]

概括准确、语言规范、内容合适、篇章连贯。

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