Ⅲ.综合运用

Different Sunglasses

Do you like to wear sunglasses?They make you look cool.Sunglasses also have an important f__1__.They protect your eyes from the harmful rays of the sun.

There are many kinds of sunglasses.Some cheap sunglasses c__2__only a few dollars,w__3__some expensive ones can cost hundreds of dollars.How much the sunglasses cost d__4__on the materials and technologies used.

The cheapest sunglasses use nothing more than glass or plastic.They help protect your eyes from bright sunlight.But they cannot offer the p__5__your eyes really need.

More expensive sunglasses have special lenses（镜片）.They help block bright light from horizontal（水平的）surfaces，such as water or a highway.

High q__6__sunglasses also offer protection from various types of ultraviolet radiation（紫外线辐射）.These are the sun's harmful rays.They can cause sunburn and many eye problems.

Moreover,sunglasses are not j__7__for summertime.They are important in winter,too.

1.f____________2.c____________3.w____________4.d____________5.p____________6.q____________7.j____________