题型:阅读理解 题类:模拟题 难易度:普通
甘肃省兰州市2018届高三英语第二次实战考试试卷
It is important to protect yourself from harmful rays. But if you think a high-factor sunscreen keeps you safe from harmful rays, you may be wrong. Research in this week's Nature shows that while factor 50 reduces the number of melanomas(黑瘤)and delays their occurrence, it can't prevent them. Melanomas are the most aggressive skin cancers. You have a higher risk if you have red or blond hair, fair skin, blue or green eyes, or sunburn easily, or if a close relative has had one. Melanomas are more common if you have periodic intense exposure to the sun. Other skin cancers are increasingly likely with long-term exposure.
There is continuing debate as to how effective sunscreen is in reducing melanomas – the evidence is weaker than it is for preventing other types of skin cancer. A 2011 Australian study of 1,621 people found that people randomly selected to apply sunscreen daily had half the rate of melanomas of people who used cream as needed. A second study, comparing 1,167 people with melanomas to 1.101 who didn't have the cancer, found that using sunscreen routinely, alongside other protection such as hats, long sleeves or staying in the shade, did give some protection. This study said other forms of sun protection – no sunscreen – seemed most beneficial. The study relied on people remembering what they had done over each decade of their lives, so it's not entirely reliable. But it seems reasonable to think sunscreen gives people a false sense of security in the sun.
Many people also don't use sunscreen properly applying insufficient amounts, failing to reapply after a couple of hours and staying in the sun too long. It is sunburn that is most worrying – recent research shows five episodes of sunburn in the teenage years increases the risk of all skin cancers.
The good news is that a combination of sunscreen and covering up can reduce melanoma rates, as shown by Australian figures from their slip-slop-slap campaign. So if there is a heat wave this summer, it would be best for us, too, to slip on a shirt, use sunscreen and slap on a hat.
Looking to have a rest after the working days?Check out to see if the following events are in your area!
Northside Festival Description: The music festival consists of artists, such as Sidney Gish and Orion Sun, free cake for everyone! If you're looking for a fresh festival with unique artists, look no further! Time: Saturday, June 9~10, from 12 pm to 6 pm Location: Baby's All Right, Brooklyn Tickets:$ 50 per person with no discount |
Solely Women Description: The William Ris Gallery is showing an exhibit all about what females meet in front of life! Check out the exhibit before it's closed after this weekend! Time: June 8~10, from 12 pm to 5 pm Location: William Ris Gallery at Jamesport Tickets: Free |
Broadway Commons Carnival Description: It's the season of carnival rides and food on a stick-yes, the carnival is still in town. With free admissions and lights to light up the sky, who wouldn't want to send their day off at Dreamland? Time: May 31~June 17, from 5 pm to 11 pm Location: Broadway Mall Tickets: Free carnival parking, admission and Victoria Circus shows |
Long Island's Festival Description: With exciting events ranging from beach concerts to parades, it's a large and impressive entertainment we can't wait for! You can also start your day with your family to have fun on the Long Beach boardwalk. Time: June 8~10, from 10 am to 11 pm Location: Long Beach Tickets:$ 80 per adult for the concert,a20% discount for children under18 |
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