1 . Alarming levels of dangerous chemicals known as Perfluorinated Alkylated Substances (PFAS) were discovered in food packaging at a number of well-known fast-food restaurants and grocery store chains, a new report found. The report comes more than two years into the Covid-19 pandemic, when the public has relied heavily on takeout and grocery deliveries.
Often called “forever chemicals” because they do not break down in the environment, PFAS are used in food packaging to prevent grease (油脂) and water from soaking through food wrappers and cups. PFAS can also be found in the ink used to print logos and instructions on food containers.
The US Centers for Disease Control and Prevention calls exposure to PFAS a “public health concern”, citing that the human-made chemicals can harm the immune system and reduce a person’s resistance to infectious diseases.
Regulatory limits for how much PFAS food packaging should contain can vary greatly. For instance, a new law in California set the limit at less than 100 ppm. “Compared to America, Denmark sets a much lower regulatory limit of 20 ppm with great success,” said Xenia Trier, an expert at the European Environment Agency. “It does work to set limits and enforce them. PFAS do migrate from the paper into the food. Even though it was not 100%, we still saw considerable transmission. In general, transmission from packaging to food is increased as the temperature of the food rises. It is the same with the time spent in wrapping materials.” Trier told NBS, one of the major American mass-media companies.
In response to the issue, Whole Foods became the first grocery chain to publicly commit to remove PFAS from takeout containers and bakery paper. Many other companies followed suit. Experts say people who want to avoid PFAS in their takeout and food delivery packaging should favor companies that have promised to remove the chemicals. “As soon as you receive your takeout, you’d better take food out of the container immediately, and never reheat food in its original container. Instead, remove your food and heat it in ceramic (陶瓷的) or glass containers.” Trier said.
1. What can we learn about PFAS in food packaging?| A．They have been used for two years. |
| B．They do little harm to consumers’ health. |
| C．They are used to break down the chemicals. |
| D．They can make wrappers resistant to grease and water. |
| A．Favorable. | B．Neutral. |
| C．Ambiguous. | D．Opposed. |
| A．Considerable migration of grease and water. |
| B．PFAS transmission from packaging to food. |
| C．Wrapper exposure to high food temperature. |
| D．Regulatory limits concerning food packaging. |
| A．Food packaging contains dangerous chemicals. |
| B．Consumers are recommended to have PFAS-free products. |
| C．PFAS found in food packaging has become a great concern. |
| D．The government has taken measures to reduce PFAS exposure. |
2 . AirTag, a small Bluetooth-and-GPS-enabled device, was released by Apple in April 2021. This small device aimed at making our lives easier was originally designed to end the trouble of losing keys, wallets or other little objects. However, it may become the “perfect” tracking tool if in the wrong hands. My ex-husband was an early adopter of the AirTag. He and I had a falling out, leading to a divorce battle. In order to win custody battle, he used the little device to track me.
As a tech giant, the Apple company brought great convenience to the users, including me. I had never given a thought to tracking via AirTag until it happened to me. So I started scanning stories about AirTag. I was surprised to find that I was not alone. There were so many people tracked by these seemingly innocent electronic tags in their daily life. AirTag which was originally launched for a better life should have such a dark side in the wrong hands.
People have found that the digital device has the potential for abuse. What matters is how to avoid its danger. Apple has released updates to the AirTag’s functionality very quickly since they hit the market. Meanwhile, Apple has also improved its customer service to deal with the bugs of this kind. If you find an unwanted AirTag following you, don’t panic. Just disable it. You can follow the prompts on your Apple device to learn more about disabling the device. Once you’ve completed the above step, the tag’s original owner can’t keep track of you any more.
Almost every digital technology creates security issues. Nobody can go and live in a cave to remain unaffected. While enjoying its convenience, you need to be aware of the risks it poses, and know how to deal with them. Prevention is more effective in security issues than fixes. After all, a stitch in time saves nine.
1. What is the original function of AirTag?| A．To track one’s location secretly. | B．To help find one’s easily lost items. |
| C．To locate one’s phone accurately. | D．To ensure the safety of one’s phone. |
| A．Her ex-husband tracked her via AirTag. |
| B．Many people suffered from security problem. |
| C．AirTag was a newly released electronic device. |
| D．She intended to know about its great convenience. |
| A．Have it updated. | B．Make it unable to work. |
| C．Pay no attention to it. | D．Contact its original owner. |
| A．People should keep pace with the times. |
| B．People should use technology in a proper way. |
| C．People should handle potential digital risks actively. |
| D．People should bear the responsibility to fix the bugs bravely. |
3 . The idea of humans causing earthquakes may seem strange at first. After all, you can run around your backyard and jump up and down all you want, and the ground isn’t going to start shaking. However, scientists have identified over 700 places where human activity has brought about earthquakes over the last century.
While many human-caused earthquakes are mild and don’t cause much damage, some of them can be serious and dangerous. In fact, scientists believe human activity has caused earthquakes with magnitudes as high as 7.9 on the Richter scale.
Scientists believe most human-caused earthquakes are the result of mining. As companies drill deeper and deeper below Earth’s surface to take out natural resources, holes left behind can cause instability which leads to a sudden falling down that causes earthquakes. Building large dams can also cause earthquakes. For example, about 80,000 people died in China in 2008 as a result of a 7.9-magnitude earthquake caused by 320 million tons of water that had been collected in the Zipingpu Reservoir after a large dam was built over a known fault line(断层线).
Anther human activity leading to earthquakes is hydraulic fracturing (水力压裂) for oil and gas. In this process, water, sand, and chemicals are forced to flow underground under high pressure to fracture rocks to let natural resources out. As those resources, such as oil and natural gas, make their way to the surface, so do the water and chemicals that were injected to begin the process. This wastewater is collected and often transported to deep underground again. Both the fracking process and wastewater have been shown to cause earthquakes.
These aren’t the only human activities that can cause earthquakes, though. Scientists point out that earthquakes can also be caused by other human activities.
1. How does human activity cause earthquakes according to the text?| A．Large dams are built away from the fault line. |
| B．The wastewater of hydraulic fracturing joins large rivers. |
| C．Mining leads to the deeper holes left below the Earth’s surface. |
| D．Hydraulic fracturing makes natural resources flow underground. |
| A．By giving examples. |
| B．By making comparisons. |
| C．By presenting opinions. |
| D．By providing instructions. |
| A．To remind people to stop the above-mentioned activities. |
| B．To inform readers of human activities causing earthquakes. |
| C．To explain the reasons for many earthquakes in recent years. |
| D．To present the damage of human-caused earthquakes to the earth. |
4 . Many of us have heard of Alex Honnold, who made history in 2018 when he became the first man to climb EI Capitan without ropes or safety equipment. But his mother, Dierdre Wolownick, just became the oldest woman to conquer the famous peak: she reached the top on September 23 — the morning of her 70th birthday.
Dierdre, the writer and language teacher, decided to take up climbing as a means to connect more with her son. In 2008, accompanied by her son Alex, she visited a climbing gym and completed 12 routes that first day with his help, but it was months before she worked up the courage to return and practice on her own.
Dierdre became committed to the sport, and began to meet friends and sharpen her skills. She scaled (登上) parts of Half Dome and Cathedral peak at a time when many people at her age are thinking about retirement and slowing down. The writer would go on to publish a book about her climbing experiences with Alex called The Sharp End of Life: A Mother’s Story.
“As a mother, I am impressed by this role exchange process. Parents and children often wind up changing roles in life as they get older,” she writes in her book. “But never, I thought, is that transformation as obvious as when they climb together.”
On September 23, Dierdre and her friends set out in the dark, at 6 am. The route is steep (陡峭的) enough to require all-fours, grabbing rocks and trees and whatever else will hold the weight. Yet despite all difficulties the team made it to the top.“It was really inspiring to watch her and then to have her on top with all of us,” said one of Dierdre’s friends.“There was a special look on everyone’s face. We knew where we were. We knew how amazing the moment truly was.
1. Why did Dierdre start climbing mountains?| A．To know her son better. |
| B．To celebrate her birthday. |
| C．To seek writing inspiration. |
| D．To set an example for the old. |
| A．Patient. | B．Courageous. | C．Intelligent. | D．Generous. |
| A．It was worth the efforts. |
| B．It took days to complete. |
| C．It was arranged on her own. |
| D．It required special equipment. |
| A．Mountain climbing benefits health |
| B．Mother goes beyond her son’s wish |
| C．Climb together, bond closer |
| D．Slow down, better your life |
