2021 年 12 月大学英语六级考试真题（第 2 套）

If you think life is wonderful and expect it to stay that way, then you may have a good chance of living to a ripe old age, at least that is what the findings of a new study suggest. That study found that participants who reported the highest levels of optimism were far more likely to live to age 85 or __26__. This was compared to those participants who reported the lowest levels of optimism. It is __27__ that the findings held even after the researchers considered factors that could __28__ the link, including whether participants had health conditions, such as heart disease or cancer, or whether they experienced depression.

The results add to a growing body of evidence that certain psychological factors may predict a longer life __29__. For example, previous studies have found that more optimistic people have a lower risk of developing chronic diseases, and a lower risk of __30__ death. However, the new study appears to be the first to __31__ look at the relationship between optimism and longevity. The researchers __32__ that the link found in the new study was not as strong when they factored in the effects of certain health behaviors, including exercise levels, sleep habits and diet. This suggests that these behaviors may, at least in part, explain the link. In other words, optimism may __33__ good habits that bolster health.

It is also important to note that the study found only a __34__, as researchers did not prove for certain that optimism leads to a longer life. However, if the findings are true, they suggest that optimism could serve as a psychological __35__ that promotes health and a longer life.

Social media is absolutely everywhere. Billions of people use social media on a daily basis to create, share, and exchange ideas, messages, and information. Both individuals and businesses post regularly to engage and interact with people from around the world. It is a powerful communication medium that simultaneously provides immediate, frequent, permanent, and wide-reaching information across the globe.

People post their lives on social media for the world to see. Facebook, Twitter, LinkedIn, and countless other social channels provide a quick and simple way to glimpse into a job candidate's personal life—both the positive and negative sides of it. Social media screening is tempting to use as part of the hiring process, but should employers make use of it when researching a potential candidate's background?

Incorporating the use of social media to screen job candidates is not an uncommon practice. A 2018 survey found that almost 70% of employers use social media to screen candidates before hiring them. But there are consequences and potential legal risks involved too. When done inappropriately, social media screening can be considered unethical or even illegal.

Social media screening is essentially scrutinising a job candidate's private life. It can reveal information about protected characteristics like age, race, nationality, disability, gender, religion, etc. and that could bias a hiring decision. Pictures or comments on a private page that are taken out of context could ruin a perfectly good candidate's chances of getting hired. This process could potentially give an unfair advantage to one candidate over another. It creates an unequal playing field and potentially provides hiring managers with information that can impact their hiring decision in a negative way.

It's hard to ignore social media as a screening tool. While there are things that you shouldn't see, there are some things that can be lawfully considered—making it a valuable source of relevant information too. Using social media screening appropriately can help ensure that you don't hire a toxic employee who will cost you money or stain your company's reputation. Consider the lawful side of this process and you may be able to hire the best employee ever. There is a delicate balance.

Screening job candidates on social media must be done professionally and responsibly. Companies should stipulate that they will never ask for passwords, be consistent, document decisions, consider the source used and be aware that other laws may apply. In light of this it is probably best to look later in the process and ask human resources for help in navigating it. Social media is here to stay. But before using social media to screen job candidates, consulting with management and legal teams beforehand is essential in order to comply with all laws.

In recent years, the food industry has increased its use of labels. Whether the labels say 'non-GMO (非转基因的)' or 'no sugar', or 'zero carbohydrates', consumers are increasingly demanding more information about what's in their food. One report found that 39 percent of consumers would switch from the brands they currently buy to others that provide clearer, more accurate product information. Food manufacturers are responding to the report with new labels to meet that demand, and they're doing so with an eye towards giving their products an advantage over the competition, and bolstering profits.

This strategy makes intuitive sense. If consumers say they want transparency, tell them exactly what is in your product. That is simply supplying a certain demand. But the marketing strategy in response to this consumer demand has gone beyond articulating what is in a product, to labeling what is NOT in the food. These labels are known as "absence claims" labels, and they represent an emerging labeling trend that is detrimental both to the consumers who purchase the products and the industry that supplies them.

For example, Hun's put a "non-GMO" label on its canned crushed tomatoes a few years ago—despite the fact that at the time there was no such thing as a GMO tomato on the market. Some dairy companies are using the "non-GMO" label on their milk, despite the fact that all milk is naturally GMO-free, another label that creates unnecessary fear around food.

While creating labels that play on consumer fears and misconceptions about their food may give a company a temporary marketing advantage over competing products on the grocery aisle, in the long term this strategy will have just the opposite effect: by injecting fear into the discourse about our food, we run the risk of eroding consumer trust in not just a single product, but the entire food business.

Eventually, it becomes a question in consumers' minds: Were these foods ever safe? By purchasing and consuming these types of products, have I already done some kind of harm to my family or the planet? For food manufacturers, it will mean damaged consumer trust and lower sales for everyone. And this isn't just supposition. A recent study found that absence claims labels can create a stigma around foods even when there is no scientific evidence that they cause harm.

It's clear that food manufacturers must tread carefully when it comes to using absence claims. In addition to the likely negative long-term impact on sales, this verbal trick sends a message that innovations in farming and food processing are unwelcome, eventually leading to less efficiency, fewer choices for consumers, and ultimately, more costly food products. If we allow this kind of labeling to continue, we will all lose.