More than 1 billion people aged from 12 to 35 are at the risk of losing their hearing from    1    (listen) to loud music on their audio devices. According to WHO, it’s considered unsafe    2    you hear a sound that is above 85 decibels for eight hours or 100 decibels for 15 minutes.    3    (normal), users of personal audio devices choose to set the volume between 75-105. Shelly Chadha of the WHO suggested that all smartphones should be fitted with a measurement system,    4    would tell you how much sound you’re listening to, and when you go over the limit.

Technology is amazing when it keeps people connected but it comes at a price. Staring down at your phone or computer for long periods of time    1    (put) great tension (紧张) on your neck. You might feel pain in your neck and shoulders. When     2    (leave) untreated, it leads to what is called “tech neck”.

    3    (fortunate), there are a few simple steps to help you.    4    (begin) with, limit the amount of time you spend on your phone or computer. Develop the habit of taking    5     three-minute break every 15-20 minutes when you use your phone or computer. Do neck exercises meanwhile.

It is equally important to use proper     6    (equip) for computer work. Having an adjustable chair is     7    (benefit). It helps you maintain the good posture and provides adequate support for your neck while you are sitting. It is also recommended     8     you buy neck support pillows and neck collars. They may help relieve your pain and allow your neck to recover slowly over time.

If your tech neck problems keep worsening, then it is time to seek help from a qualified health professional. As a general rule, the sooner you seek treatment, the     9    (likely) it is that you will succeed     10     treating the problem.

Hand-washing     1    (be)one of the simplest and most effective ways to prevent the spread of COVID-19. And yet, some people still fail     2     (wash)their hands effectively. However, there is one last procedure     3    might save the day–how they dry their hands.

Scientist from the University of Leeds, UK, found that both paper towels     4    jet air hand dryers–the two main ways people dry their hands in public toilets–can     5     (significant) reduce virus contamination(污染).But there is still a big difference between the two.

In their study, scientists contaminated the hands of participants with a harmless virus. To simulate(模拟)poorly washed hands, participants     6     (ask) not to wash them at all before either wiping them with paper towels or     7    (put) them under a hand dryer. Scientists then tested surfaces that the participants touched afterward–doors, elevator buttons and phones,    8    example. They found that on 10 out of 11 surfaces, the contamination was much     9    (heavy) after being touched by a blow-dried hand than a towel-wiped hand.

So the next time you use a public toilet, make sure you dry your hands with a paper towel, ideally after     10    (second) of careful hand-washing.

Year 2020 has witnessed the nation’s battle with Coronavirus Disease 2019.     1    (prevent) the disease spreading further, people from all over China have been making changes to their everyday lives. Most people take their temperatures, wash their hands often, wear masks, and don’t go out unless necessary. One of     2    (painful) changes was that many Chinese people didn’t get together to celebrate the Spring Festival,     3     tradition dating back to 4,000 years. No matter how powerful the enemy is, united people will definitely defeat it in the end.

Fishing nets in the sea have become    1    serious problem. They may be many kilometers long with plastic balls to keep them    2     (float) on the water, and weights to hold them down on the seabed.    3     (unfortunate), the plastic nets are impossible to see underwater. So the term to describe    4    (they) is “a wall of death”. Their advantage is    5    they catch fish effectively.

However, they also cause danger to sea animals. First, not only are target fish caught in the net, but many other sea    6    (animal) are found hanging there. Those not    7    (need) for marketing are thrown away. Second, nets are in danger of     8    (cut) loose by fishermen. If a net       9    (become) free-floating, it is moved by the tides all over the ocean. It behaves as a hidden danger, killing all that are trapped in it. So many animals being caught in driftnets make many think that it is necessary to have a worldwide ban     10    all driftnet fishing.