Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.Seeing Blue
Blue-light-blocking glasses are supposed protect eyes from blue light from our smartphones and computer screens. 11 we spend much time on them, it sounds smart to buy a pair of blue-light-blocking glasses, right? After all, eye problems 12 lead to poor sleep and even worse diseases. The glasses cost 13 $15 to several hundred dollars. But do they work?
Elizabeth Esparaz, an ophthalmologist (眼科专家), says the reasons which glass companies 14 (share) can be confusing. In fact, blue light is not always bad. “The sun gives off more blue light than smart phones or computers, and it’s actually beneficial,” says Dr. Esparaz. 15 helps our mood and sleep-wake cycle.
The problem is blue light at night: It can harmfully change our work-and-rest cycle and stop us from falling asleep.
So, wearing blue-light-blocking glasses should help people 16 watch movies in bed or read from a tablet at night to avoid sleeplessness. A 2021 review study, in 17 24 past studies were looked at, found that people 18 (affect) by sleep disorders, jet lag and night work fell asleep faster after using these glasses.
As for eye problems, a 2018 review study by in Australia found few evidence that blue-light-blocking glasses prevent eye-related diseases.
“These glasses aren’t going to be harmful,” says Dr. Esparaz. But, she adds, there’s no way to know if one pair is better than another. A 19 (reliable) solution: Turn on the blue-light-filtering (过滤) function on your devices and limit screen time before bed. To help with eye problems, Dr. Esparaz suggests 20 (take) breaks and using relaxing eye drops.