1 . In the old days, when you had to drive to a movie theater to get some entertainment, it was easy to see how your actions could have an impact on the environment. After all, you were jumping into your car, driving across towns, coughing out emissions (排放) and using gas all the way. But now that we’re used to staying at home and streaming (流式传输) movies, we might get a little proud. After all, we’re just picking up our phones and maybe turning on the TV. You’re welcome. Mother Nature.
Not so fast, says a recent report from the French-based Shit Project. According to Climate Crisis: The Unsustainable Use of Online Video, digital technologies are responsible for 4% of greenhouse gas emissions, and that energy use is increasing by 9% a year. Watching a half-hour show would lead to 3.5 pounds of CO2 emissions. That’s like driving 6.28 kilometers. And in the European Union, the Eureca project found that data centers (where videos are stored) there used 25% more energy in 2017 compared to just three years earlier, reports the BBC.
Streaming is only expected to increase as we become more enamored of our digital devices (设备) and the possibility of enjoying entertainment where and when we want it to increase. Online video use is expected to increase by four times from 2017 to 2022 and account for 80% of all Internet traffic by 2022. By then, about 60% of the world’s population will be online.
You’re probably not going to give up your streaming services, but there’re things you can do to help lessen the impact of your online use, experts say. For example, according to Lutz Stobbe, a researcher from the Fraunhofer Institute in Berlin, we have no need to upload 25 pictures of the same thing to the cloud because it consumes energy every time. If instead you delete a few things here and there, you can save energy. Moreover, it’s also a good idea to stream over Wi-Fi, watch on the smallest screen as you can, and turn off your Wi-Fi in your home if you’re not using your devices.
1. What topic is the first paragraph intended to lead in?| A．The environmental effects of driving private cars. |
| B．The improvements on environmental awareness. |
| C．The environmental impacts of streaming services. |
| D．The change in the way people seek entertainment. |
| A．Get more skeptical of. | B．Become more aware of. |
| C．Ge more worried about. | D．Feel much crazier about. |
| A．Its environmental effects are worsening. | B．It is being reduced to protect the planet. |
| C．It is easily available to almost everyone. | D．Its side effects have drawn global attention. |
| A．Playing Online games over mobile networks. | B．Downloading music on a personal computer. |
| C．Uploading a lot of images of the same thing. | D．Watching downloaded movies on a mobile phone. |
2 . The monarch butterfly migration(迁徙)is at risk because of climate change and other envuronmental factors.
Do you know that monarch butterflies can travel up to 50- 100 miles a day? If you know they need travel about two months, you’ll have an idea of the distance monarchs travel to get to Mexico.
Monarch butterflies are the only hind of butterflies to make a two-way migration. They travel to Mexico to escape the winter season in the northern climates. Cold, wet weather is considered deadly for monarchs, while hotter, diner summer change their homes in the north.
2020, however, saw a 26% drop from the year earlier in migration patterns reported in a report from the World Wildlife Fund and the Mexican government. With this drop, the butterflies’ population covered only 2.1 hectares in 2020, compared to 2.8 hectares a year earlier. And the Monarch Butterfly Biosphere Reserve in Michoacan. Mexico, lost trees at a higher rate than it did in 2019.
With climate change as the monarch butterflies’ biggest challenge, they are faced with many dangers, such as drought, deforestation(滥伐森林)and struggle to breed. These dangers affect the whole migration and hold back population growth. Female monarchs lay their eggs on milkweed flowers, which have been heavily affected by the wild weather from spring and summer of last year. Because of this, the development of butterfly eggs was also affected.
Since 2013, Mexico has seen a rapid drop in the number of migrants arriving to the area. The effects of climate change and deforestation have become an important sign that action needs to be taken to make sure of a healthy migration for monarchs going forward. If not, it’s their possible dying, out that wall fall unto our hands.
1. Haw far do monarch butterflies fly to escape the cold?| A．50-100 miles. | B．100-200 miles. |
| C．1,500 – 3,000 miles. | D．3,000 -6,000 miles. |
| A．It is becoming cold and wet. | B．It is dangerous for monarchs |
| C．Its environment is being destroyed. | D．Its area is growing smaller. |
| A．The damage to forests. | B．The dangers monarchs face. |
| C．The growth process of monarchs. | D．The development of butterfly eggs |
| A．Point out the signs of climate change. | B．Explain the cause of the monarch migration. |
| C．Call for measures to stop monarchs dying out. | D．Express regret at the monarchs’ disappearance. |
3 . A report lasting almost three decades showed that transportation—flying, driving, rail, commercial shipping, etc.—is responsible for a larger share of domestic greenhouse gas (GHG) emissions (排放) than any other economic sector. Though passenger cars currently account for the largest portion of transportation-related GHG emissions, air travel is one of the fastest-growing polluters. In 2018, aircraft were responsible for 9% of U.S transportaton sector GHG emissions and 2.4% of total carbon dioxide emissions globally.
The carbon dioxide emitted from one round-trip flight from New York to London totals about 1,259 pounds per passenger, according to ICAO’ s Carbon Emissions Calculator—that’s more than what the average citizen of Kenya (and more than 30 other countries)emits over a full year.
Planes also leave behind those ice trails (痕迹)—called contrail clouds—which are even more polluting than the CO2 they produce. The word “contrails” is a mix of “condensation” and “trails”. They occur when waste gases mix with low-temperature, high-humidity (湿度) air. Contrails are harmful not just because they block sunlight, but also because they trap heat coming up from the ground, finally creating a warming effect below.
Today, alternative fuels that are similar in chemistry to traditional fossil jet fuel, but made from waste and raw materials instead, are becoming more commonplace. San Francisco International Airport has already started delivering sustainable aviation (航空) fuel through a pipeline; American, JetBlue, and Alaska Airlines are some of the industry players that have committed to using it.
New research suggests that because contrail louds form only in very low temperatures, reducing the altitude of fights even slightly could dramatically minimize contrail climate forcing. One study found that just 2% of flights in Japan’s airspace were responsible for 80% of that space’s radiative forcing. The same study estimated that if even 1.7% of flights reduced their altitude by 2,000 feet—which is a normal amount of variation from the flight path anyway—the climate impact of contrails could be cut by 59%.
1. What can we learn about air travel in America from paragraph 1?| A．It emitted more CO2 than passenger cars did in 2018. |
| B．It is the most convenient means of transportation. |
| C．It accounted for over two percent of global CO2 emissions in 2018 |
| D．It is considered as the largest air polluter recently. |
| A．Global warming | B．Low temperatures. |
| C．Expensive flying costs. | D．Increasing water in the air. |
| A．To show alternative fuels are much cheaper. |
| B．To prove alternative fuels are increasingly popular. |
| C．To announce alternative fuels have a huge effect on the air. |
| D．To stress raw materials of alternative fuels are common. |
| A．Change their flight paths. | B．Reduce some flight distance. |
| C．Develop alternative fuels. | D．Fly at a slightly lower altitude. |
4 . Clothing rental is a hot new industry and retailers (零售商) are demanding to get on board in hopes of attracting green shopper.
But is renting fashion actually more environmentally-friendly than buying it, and if so, how much more? Journalist and author Elizabeth Cline investigated (调查) this question and concluded that it's not as sustainable as it seems.
Take shipping, for example, which has to go two ways if an item is rented — receiving and returning. Cline writes that consumer transportation has the second largest carbon footprint of our collective fashion habit after manufacturing.
She writes, ''An item ordered online and then returned can send out 20 kilograms of carbon each way, and increases up to 50 kilograms for rush shipping. By comparison, the carbon impact of a pair of jeans purchased from a physical store and washed and worn at home is 33.4 kilograms, according to a 2015 study by Levi's.''
Then there's the burden of washing, which has to happen for every item when it's returned, regardless of whether or not it was worn. For most rental services, this usually means dry cleaning, a high impact and polluting process. All the rental services that Cline looked into have replaced perchloroethylene (氯乙烯), a carcinogenic (致癌的) air pollutant, still used by 70 percent of US dry cleaners, with alternatives, although these aren't great either.
Lastly, Cline fears that rental services will increase our appetite for fast fashion, simply because it's so easily accessible. There's something called ''share washing'' that makes people waste more precisely because a product or service is shared and thus is regarded as more eco-friendly. Uber is one example of this, advertised as ''a way to share rides and limit ear ownership.'' and yet ''it has been proven to discourage walking,bicycling, and public transportation use.''
Renting clothes is still preferable to buying them cheap and throwing them in the dustbin after a few wears, but we shouldn't let the availability of these services make us too satisfied. There's an even better step — that's wearing what is already in the closet.
1. What is Elizabeth Cline's attitude toward clothing rental?| A．Approving. | B．Unfavorable. |
| C．Objective. | D．Enthusiastic. |
| A．rental services are on the rise |
| B．clothing rental will be as successful as Uber |
| C．renting clothes might waste more than expected |
| D．renting clothes might make people lose interest in fast fashion |
| A．give up renting any clothing |
| B．purchase inexpensive clothes |
| C．rent clothes rather than buy them |
| D．make full use of clothes we've possessed |
| A．Clothing rental is a new fashion. |
| B．Clothing rental is retailers' preference. |
| C．Renting clothes is not that eco-friendly. |
| D．Renting-clothes business is in a dilemma. |
