2014高考英语文章阅读类：2013暑假练习题（6）及答案解析
第二节:任务型阅读 (原创)
阅读下列材料，从所给的六个选项(A、B、C、D、E和F)中选出符合各小题要求的最佳选项，并在答题卡上将该项涂黑，选项中有一项为多余选项.
Directions: Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need.
61.________________________________
The colored part of the eye is called the iris. There are three basic eye colours ─ brown, blue and green. A few albino people have red or pink eyes, but these are very rare. Many people believe that blue eyes are more delicate than brown eyes. In fact they are just as tough as brown eyes, although they are more sensitive to light.
62._______________________________
We only see part of the eyeball, although the whole eye is as big as a table tennis ball. Light enters the eye through the pupil and passes through the lens. The lens focuses the light onto the retina at the back of the eye. The retina sends the signal to the brain along the optic nerve. The
