1 . If the eyes are the romantic’s window into the soul, then the teeth are an anthropologist’s door to the stomach.
In a study published recently in the journal Science, Peter Ungar of the University of Arkansas and his partner, Matt Sponheimer of the University of Colorado, US, examined the teeth of ancient human beings to find out what they were really eating.
They already knew that different foods cause different marks on teeth. Some cause scratches, while others cause pits(坑). The carbon left on teeth by different foods is also different. Tropical grasses, for example, leave one kind of carbon, but trees and bushes leave another kind because they photosynthesize(进行光合作用)differently.
Traditionally, scientists had looked at the size and shape of teeth and skulls to figure out what early humans ate. Big flat teeth were taken to be signs that they ate nuts and seeds, while hard and sharp teeth seemed good for cutting meat and leaves. But this was proved wrong.
The best example was the Paranthropus(傍人属类人猿), one of our close cousins, some of whom lived in eastern Africa. Scientists used to believe that they ate nuts, fruits and seeds because they had big crests(突起)on their skulls, suggesting that they had large chewing muscles and big teeth. If this had been true, their teeth should have been covered with pits like the surface of the moon. They would also have had a particular type of carbon on their teeth that typically comes from tree products, such as nuts and seeds.
However, when the two scientists studied the Paranthropus, it turned out to have none of these characteristics. The teeth had a different kind of carbon, and were covered with scratches, not pits. This suggested they probably ate grass, not nuts and seeds. It was the exact opposite of what people had expected to find.
Carbon “footprints” give us a completely new and different understanding of what different species ate and the different environments they lived in, which also provide a groundbreaking perspective on the diets and habitats of various species. This method has reshaped our understanding of ancient human diets, challenging previous assumptions based on tooth and skull morphology.
1. Which of the following best explains the underlined sentence?| A．Anthropologists can know the structure of human stomachs by studying their teeth. |
| B．Anthropologists can find out the diet of early humans by studying their teeth. |
| C．Anthropologists can learn whether humans were healthy by looking at their teeth. |
| D．Anthropologists can get the most useful information about humans from their teeth. |
| A．Pits on teeth are caused by eating grass or leaves. |
| B．Scratches on teeth are caused by eating nuts or seeds. |
| C．Different foods leave different marks and carbon on teeth. |
| D．Early humans with hard and sharp teeth at e meat and leaves. |
| A．To show they had different eating habits from other humans. |
| B．To prove living environment makes a difference to skull structure. |
| C．To demonstrate they were one of our close cousins living in eastern Africa. |
| D．To reveal the size and shape of teeth don’t show accurately what early humans ate. |
| A．Cause and effect. |
| B．Problem and solution. |
| C．Comparison and contrast. |
| D．Listing and classification. |
2 . Interlibrary Loan is the service that the Osterhout Free Library offers for free to our patrons (顾客). You can use Interlibrary Loan to borrow an item (books, DVDs, music CDs, etc.) from within the continental 48 states if it is unavailable in the Luzerne County Library System.
How to request an Interlibrary Loan item·To request an Interlibrary Loan item, you must either call the Osterhout Free Library, or come to our Information Services Desk.
·You must know exactly what item(s) you would like. We do not accept requests for general topics, for instance, “I would like books on antique cars.”
·Be sure to check the Luzerne County Library System’s catalog before asking Interlibrary Loan for an item.
Interlibrary Loan Processing
·When a patron requests Interlibrary Loan items, they are allowed to request more than one item, but there is a maximum of 5 requests in the system per patron.
·When the item comes in, the patron will be contacted via phone to ask him/her to pick it up. If the item is not able to be obtained, the patron will be notified via e-mail.
·If you wish to renew your Interlibrary Loan item, you must call us at least one week before the due date.
Interlibrary Loan Penalties (处罚)
·Interlibrary Loan overdue fees are $0.50/day per item.
·The following actions will result in an additional $3.00 per item fine:
(1)Returning an Interlibrary Loan item to any library other than the Osterhout Free Library.
(2)Returning an Interlibrary Loa n item without the paperwork with the due date.
1. What is a must when you borrow a book from Interlibrary Loan?| A．Renewing the book 3 days in advance. | B．Specifying your desired book. |
| C．Visiting the Osterhout Free Library. | D．Giving priority to Interlibrary Loan. |
| A．Being reminded of an unavailable item by e-mail. |
| B．Borrowing at least 5 items at a time. |
| C．Being given unlimited renewal of an item. |
| D．Having a free delivery service. |
| A．$4. | B．$6.5. |
| C．$7. | D．$3.5. |
3 . The humble beaver could hold the key to saving our water, according to a new research that has found how their dam building skills protect the rivers threatened by climate change.
The research, done on rivers in Colorado, found the wooden barriers built by beavers raise water level upstream. As it builds up, the water flows into surrounding soils and secondary waterways. These acts separate out extra nutrients and pollutants before water reenters the main channel downstream.
Extreme weather events, such as severe storms, impact water quality in major river systems. Droughts and floods are becoming more frequent, and the scientists have also found they are contributing to an increase in the American be aver in the US, and consequently an explosion of dam building.
The team chose to monitor a 40-kilometer stretch of the East River. They reviewed data on water levels gathered hourly by sensors fixed in the river and the areas along the river.
They also collected water samples, including from below the ground’s surface to monitor nutrient and pollutant levels. The researchers compared water quality along the stretch during a historically dry year, to water quality the following year when water levels were unusually high. They also compared these year-long datasets to water quality during the nearly three- month period, starting in late July 2018, when the be aver dam blocked the river.
The study revealed the dams increased nitrate（硝酸盐）by nearly 50% by increasing the pressure of the water flow upstream 10 times over, which pushed more water out into the surrounding areas. This decrease in nitrates, which are absorbed and digested by tiny organisms in the soil, helped increase the oxygen content and quality in the rivers.
Beavers’ handiwork is responsible for the land they love.
1. What do the wooden barriers created by beavers act as?| A．Waterways | B．Samples | C．Dams | D．Sensors |
| A．More dams emerge on the river. |
| B．More American beavers appear in the US. |
| C．More pollutants are removed from the river. |
| D．More oxygen is created in the river. |
| A．To keep an eye on the water quality. | B．To compare water quality of the stretch. |
| C．To reveal the damage caused by floods. | D．To save the river from drying up. |
| A．Organisms help decrease nitrate. |
| B．Beavers contribute to climate change. |
| C．Extreme weather catches researcher’s eyes. |
| D．Beavers help protect rivers against climate change. |
4 . Global Support assists you to organize and undertake activities outside of New York.
If you are a student, please contact Office of Global Services about visa-related questions, the Student Health Center about health insurance abroad, Office of Global Programs about studying away at one of our university’s global sites, and Office of General Counsel about any travel to Cuba.
When Should I Contact Global Support?
Conducting a university activity outside of New York, whether it is research, short trips, exchange programs or study-away programs, may present obstacles as a result of U.S. or local legal requirements. Countries and local districts have their own set of rules and regulations, and it can be challenging to be knowledgeable and current on the rules and regulations of the many countries and districts where the university operates.
How Can Global Support Help?
We will help you identify important issues relating to your activity, obtain information about these issues, engage the appropriate administrative departments and function al experts, and address these issues.
Our university maintains functional experts in a range of administrative areas to provide you with technical advice and guidance. Because there are often changes to local country rules and regulations, these university experts have relationships with third party local country experts, from whom they at times seek advice and guidance. Allowing the university functional experts to remain current on the best local country experts ensures you get the best advice at the best price.
1. Where should you go to ask questions about travel to Cuba?| A．Office of Global Services. | B．The Student Health Center. |
| C．Office of Global Programs. | D．Office of General Counsel. |
| A．researches | B．laws | C．programs | D．cultures |
| A．Their constant adaptation to changes. | B．Their expertise in introducing regulations. |
| C．Their cooperation with local country experts. | D．Their diverse educational backgrounds. |
5 . What is a GPA?
A GPA, or Grade Point Average, typically ranging from one to four, is a number reflecting your course performance on average. It’s used by universities to determine whether students meet academic standards and by students to enhance job prospects or secure admission into post-graduate programs.
How to calculate a GPA?
● Determine the letter grade and the number of credit hours for each course you take in a term;
● Translate the letter grade to grade points using your school’s grading system;
● Multiply the grade points by the credit hours for that course;
● Add up all the credit hours for the courses;
● Divide the total number of grade points by the total credit hours and you get the GPA.
Example: Academic Transcript of Jane Smith Winter 2023 | |||||
Courses | Letter Grade | Grade points | Credit hours | Total points | GPA |
Creative Writing | A+ | 4.0 | 3 | 12 | - |
Psychology | A- | 3.7 | 3 | 11.1 | - |
History | B+ | 3.3 | 3 | 9.9 | - |
Computer Science | F | 0.0 | 2 | 0 | - |
Total | - | - | 11 | 33 | |
What are the consequences of failing college courses?
● Every failing grade (F) significantly impacts your GPA for that academic year, limiting clubs, organizations and program choices, as competitive programs require top GPAs.
● Most financial aid programs require a specific GPA. A sharp drop in GPA due to several course failures may lead to withdrawal from financial aid programs, unless you retake the courses and pass.
● For college athletes on sports scholarships, failing courses repeatedly can lead to losing scholarships and team spots.
● Failing multiple courses can result in school removal and affect future applications.
1. What is Jane Smith’s GPA this term?| A．3.3. | B．3.0. | C．2.8. | D．1.0. |
| A．School removal. | B．Loss of financial aid. |
| C．Choice limitation. | D．Disqualification in sports. |
| A．An academic course guide. | B．A campus job fair poster. |
| C．A graduate application form . | D．An athletic team schedule. |
6 . To produce the classic clothing, blue jeans, producers rely on indigo dye (靛蓝染料), the only molecule known to provide jeans’ unique, beloved color. While indigo itself naturally comes from a plant, growing demand for blue jeans throughout the 20th century gave rise to synthetic (合成的) indigo, which is now more commonly used.
Indigo is the dye that makes jeans blue, but it doesn’t mix with water. To dye clothes, usually, chemicals are needed to make the color stick to the cloth. But in Denmark, scientists have created a new way to dye clothes using an enzyme (酶), which is a kind of protein that can cause chemical reactions, instead of harmful chemicals. This new method is better for the environment and doesn’t use poisonous stuff.
The chemical process for dyeing blue jeans has persisted for the last century. Workers are exposed to the poisonous chemicals, which also pollute the environment near factories. Waste water from those factories often ends up in waterways, decimating local ecosystems and even dyeing rivers blue.
Ditte Hededam Welner, the study’s lead researcher, says their new enzyme works really well and is strong enough for making lots of jeans without breaking down. This enzyme makes dyeing with indican, which is like indigo, much less harmful to the planet — about 92% better than the old way.
However, the new method doesn’t fix all the environmental problems of making jeans. Making a single pair of jeans uses a lot of water — enough to fill many bathtubs — from growing the cotton to putting the final touches on the jeans.
Even though the new dyeing process is better for the environment, it’s not always easy or cheap to change to it. Welner’s team isn’t sure if jeans companies will find it easy or affordable to switch to this method. It costs a little bit more — just seven cents extra per pair of jeans — to use the enzyme for dyeing. But Welner believes it’s worth it because it’s much better for the environment.
1. Why was synthetic indigo created in the 20th century?| A．It made jeans’ color unique. | B．It was easy to dye cloth with it. |
| C．People liked jeans made from it. | D．People were in greater need of jeans. |
| A．Troubling. | B．Entering. | C．Destroying. | D．Defeating. |
| A．The colour is more beautiful than the synthetic indigo. |
| B．The market can keep stable goods supplies. |
| C．Enzyme facilitates the advance of science. |
| D．The dye is more environmentally friendly. |
| A．Production costs. | B．Environmental benefits. |
| C．Water consumption. | D．Laborer shortage. |
7 . Hidden Gems: Underrated National Parks Worth Exploring
Many travelers flock to popular national parks like Yellowstone for their family vacations or adventurous getaways. However, there are some lesser-known gems that often go unnoticed despite their remarkable beauty and attractions.
Isle Royale National Park
Nestled in the heart of Lake Superior, Isle Royale requires a bit of effort to reach, but the journey is rewarded with breathtaking scenery. Accessible only by daily ferries, this park sees far fewer visitors compared to larger destinations like Yellowstone. Hikers are treated to sightings of wildlife such as wolves along the park’s picturesque trails.
Dry Tortugas National Park
Situated 68 miles southwest of the Florida Keys, the Dry Tortugas is a secluded (偏僻的) island park accessible only by boat or plane. Despite its small size, it boasts rich history, abundant marine life, and stunning coral reefs. At its center stands Fort Jefferson, the largest masonry structure in the Western Hemisphere.
Wrangell-St. Elias National Park
Covering over 13.2 million acres, Wrangell-St Elias National Park is the largest in the entire U.S. park system. Remote and largely undeveloped, this park challenges visitors with limited access—only two roads lead into it. However, those who venture here are rewarded with a profound connection to nature unparalleled elsewhere.
Big Bend National Park
For travelers seeking a truly rugged (崎岖的) experience, Big Bend National Park is a must-visit destination. Renowned for its whitewater rafting, camping, and hiking opportunities, this park can be excessively hot during the summer months, deterring many tourists.
These hidden gems offer unique experiences and breathtaking landscapes, making them worthy contenders for any adventurer's bucket list.
1. Why does Isle Royale National Park receive fewer visitors?| A．It is located in a remote area and is difficult to reach. |
| B．It lacks wildlife and natural landscapes. |
| C．It has no historical or cultural significance. |
| D．Its climate is extremely hot. |
| A．Its white sand beaches. | B．Its ancient ruins. |
| C．Its abundant marine life and coral reefs. | D．Its mountainous landscapes. |
| A．Isle Royale National Park | B．Dry Tortugas National Park |
| C．Big Bend National Park | D．Wrangell-St. Elias National Park |
8 . Green Line Performing Arts Center
Upcoming Programs:
First Monday Jazz Series: Crosswind
Monday Feb 4 | 7-9 pm
First Monday Jazz is a free monthly event showcasing local Chicago jazz artists.
Green Light Series: South Side Story Time
Sunday Feb 17 |10-11 am
Bring your kids to listen, learn, sing, dance, and interact! South Side Story Time is a small gathering that centres on readings for its young attendees along with the chance for their parents to socialize. Open to families with children of all ages.
Sistergirls and Freedom Fighters: Stories in Celebration of Women’s Power and Grace
Wednesday Feb 20 |7-8 pm
Join us for an evening of storytelling featuring the dynamic singing, in the Spirit by Emily Hooper Lansana.
This performance will highlight a range of stories that demonstrate women’s creative and political genius from folk heroines to Nobel Peace Prize winners.
Family Saturdays: Art together
Every 1st Saturday of the Month | 3-5 pm
Explore your child’s artistic curiosity with hands-on art workshops designed to stimulate creativity and play. These interdisciplinary workshops are exciting for the entire family, offering activities from music to arts and crafts. Come to learn something new! Appropriate for families with children. Registration is encouraged.
Follow Arts + Public Life on Facebook for more event details and a full list of all upcoming performances.
1. When can people enjoy jazz in February?| A．At 8 pm every first Monday. | B．At 4 pm every other Saturday. |
| C．At 7 pm every first Wednesday. | D．At 9 pm every other Monday. |
| A．It lasts two hours. | B．It is organized by Emily. |
| C．It is a prize-winning performance. | D．It celebrates women’s achievements. |
| A．Activity types. | B．Event frequency. |
| C．Target participants. | D．Registration requirements. |
9 . A study published in the journal Nature lists some hybrid (杂种的) species that could become prevalent (盛行的) in the ocean due to climate change. Here are four of those hybrid species.
“Brolar” bears — Brown bears and polar bears
Evidence of a hybrid species born from brown bears and polar bears has been found in the United States and Canada in the past.
Known as “Polar bears” or “Pizzlies”, they have a mostly white coat, with a brownish hue and a nose that is a cross between a polar bear and a brown or grizzly bear.
They are known to be more suited to warmer temperatures than their Arctic relative, as they do not rely so heavily on sea ice for hunting.
“Narlugas” — Narwhals (独角鲸) and beluga whales (白鲸)
In 1990, a hunter in West Greenland discovered an interesting skull, which appeared to be that of a beluga whale-narwhal hybrid. It wasn’t until 2019 that DNA analysis confirmed that the creature was indeed 54% beluga from its father, and 46% narwhal from its mother.
Experts believe that the hybrid may have been grey in color and possessed a tail like a narwhal but forward flippers like those of a beluga whale.
Hybrids of harp seals and hooded seals Numerous species of Arctic seal are expected to mate (交配) to form hybrid offspring due to diminishing sea ice. This includes a hybrid of the harp seal and hooded seal, which both breed on pack ice of the North Atlantic Ocean and extend into the Arctic Ocean in summer months.
A hybrid animal, found in the Gulf of St. Lawrence in Canada, was formally reported and confirmed by molecular analysis in 1997.
“Harbor-Dall” porpoise (鼠海豚) — Harbor porpoises and Dall’s porpoises
Hybrids of the harbor porpoises and the Dall’s porpoises have been found off the coast of British Columbia, Canada. Harbor porpoises are thought to be in decline due to habitat disturbance, meaning they may turn to other species to mate with.
Experts believe more harbor porpoises will move north as temperatures rise, which will further increase their chances of breeding with Dall’s porpoises.
1. What do the four listed animals have in common?| A．They share the same color. | B．They are born due to the polar cold. |
| C．Their parents come from different species. | D．Sea ice is extremely important for them to hunt. |
| A．“Brolar” bears. | B．“Narlugas”. |
| C．Hybrids of harp seals and hooded seals. | D．“Harbor-Dall” porpoise. |
| A．Economy. | B．Education. | C．Entertainment. | D．Environment. |
10 . On July 29, 10-year-old Mayah Zamora went home after being hospitalized for 66 days. Mayah was a survivor of the May 24 shooting rampage at Robb Elementary in Uvalde, Texas.
The little girl had more than 20 surgeries and underwent weeks of physical therapy after being shot in her hands, chest and back during the school shooting. Mayah’s doctors have called her survival miraculous.
On August 24, she was honored as the Hero of the Month for August by MLB’s Houston Astros at a game against the Minnesota Twins, where she threw out the first pitch. While there, Mayah also met former Astros shortstop (游击手) Carlos Correa, who shared some incredible news with her family.
The Zamoras learned during the game that the Correa family Foundation and other donors are funding the construction of a new home for the family in a location they chose. The trauma (创伤) of living just blocks from the gunman’s house had been taking a toll on (给……造成重大损伤) the young survivor.
“I could never begin to imagine everything she has gone through, and we feel that this is one thing we could do to try to alleviate some of her pain,” Correa said. “I’m thankful to both teams for being a part of this effort.”
His foundation shared a statement and some great photos of Mayah’s special night at the ballpark on its Facebook page.
“We are so proud of you. Mayah, and we are honored to recognize you as our Hero of the Month,” wrote the Correa Family Foundation. “We hope this will be an opportunity for Mayah and her family to rebuild their lives, make new memories, and look towards a bright future.”
1. Why did the Correa family Foundation and other donors fund a new home for the Zamoras?| A．Because the Zamoras didn’t want to live in their home. |
| B．Because Correa wanted to reward Mayah for her bravery. |
| C．Because the Zamoras’ home was near the gunman’s house. |
| D．Because the Zamoras’ home had been destroyed by the gunman. |
| A．Ease. | B．Suffer. | C．Delay. | D．Confirm. |
| A．Selfish. | B．Caring. | C．Determined. | D．Responsible. |
| A．A diary entry. | B．A news report. | C．A book review. | D．A moving story. |
