Are tears important？Yes，they keep your eyes wet，but they also help them stay clean.Every time we blink，we wash the surface of the eye with tears.In this way we wash out dust and other things that get into the eyes.We should not rub them when they feel uncomfortable，though；we should just blink，or clean them out with clean water and cotton.

　　When you've been reading for a long time，try this.Hold your head straight，and look straight out in front of you.The eyes have muscles that move them from side to side and up and down without you moving your head.This is why you need to rest your eyes when they are tired.

　　31．Put the following steps in the right order.

　　a．Light passes through the lens.

　　b．Light strikes the object and bounces off it.

　　c．Light travels through the pupils.

　　d．The optic nerve sends the image to the brain.

　　A．a，c，b，d

　　B．b，c，a，d

　　C．b，a，c，d

　　D．a，b，c，d

　　【解析】　细节理解题。根据第二段可知，物体反射的光线先是通过瞳孔，然后再通过水晶体，水晶体将看到的物体的图像反过来传到眼底，到达视网膜的视神经上，最后传到大脑，所以正确的顺序是B。

　　【答案】　B

　　32．When the light that bounces off an object goes through the lens，the image of the object becomes________.

【2017届广东省广州市重点学校高考英语一轮复习检测：9（含解析）】相关文章：

★ 备战2016年高考英语第一轮复习的七大方法

★ 2017届高考英语二轮复习课时训练：10（含解析）

★ 2017高考四川省广安市英语阅读理解一轮系列训练：7（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第3组（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (48)

★ 2017高考四川省广安市英语阅读理解一轮系列训练：6（含解析）

★ （全国通用）2014届高考英语一轮单元复习 限时强化训练三

★ 四川省2016届高考英语一轮复习课时作业（37） Module 1 Basketball 外研版选修8

★ 浙江省湖州市2014高考英语完形填空一轮（暑假）精炼（1）含答案

★ 浙江省湖州市2014高考英语完形填空一轮（暑假）精炼（11）含答案