填空题

The best sunglasses aren’t always the most expensive. No one with normal eyes needs sunglasses to (36) damage to their eyesight. But sunglasses do make life more (37) . Tile eye itself can deal with a wide range of light intensity from bright sunlight to a dimly-lit room. It (38) closes down in bright sunlight so that less light can enter it. Actually bright light won’t harm your eyes. However, glare can lead to headaches as you (39) the muscles around your eyes and then the (40) in your neck. Reducing that glare with a good pair of sunglasses makes bright sun more (41) whether the glare comes from the printed page of a newspaper or from the (42) in front of you. But don’t use them to stare at the sun or a welder’s flame. No sunglasses will (43) you from such intense light. While you buy your sunglasses, (44) . You shouldn’t buy sunglasses without trying them on. They should fit comfortable but not too tightly. Tight spectacles can cause headaches, as do very heavy frames. (45) . Hold the glasses at arm’s length and look through them to test the lenses. You’ll be more likely to see any unevenness in the glass from a distance. (46)