6 . Healthy human skin is covered with bacteria (细菌) that are quick to settle in an open wound. To prevent these organisms from spreading through the body, which can permanently injure or kill a person, the infected wound may need to be cleaned and treated with antibiotics. Medical professionals typically identify infections by unwrapping and observing a wound or by swabbing (用拭子擦拭) it and conducting a laboratory test. But removing a wound dressing can slow down the healing process. Plus, observations are subjective, while swab tests take time and require that a patient be physically present.

To address these issues, some research teams are developing devices that sit under bandages and continuously monitor indirect signs of infection, such as changes in wound temperature or acidity. And scientists at the National University of Singapore have now created an even more direct infection sensor.

This sensor can detect an enzyme (酶) called DNase. The enzyme acts as a reliable infection indicator because disease-causing bacteria produce it in large amounts inside wounds, whereas bacteria on healthy skin do not—so testing for the substance reduces the chance of a false positive result. Furthermore, DNase builds up before other infection signs appear. The new alert system, nicknamed the“wireless infection detection on wounds” (WINDOW) sensor, was detailed in Science Advances.

WINDOWs enzyme-sensing parts rely on a material called DNAgel. There searchers developed a particular kind of DNAgel that remains stable in watery environments, such as the human body, but begins to break down in the presence of DNase. They connected this gel (凝胶) to a chip that senses when the gel responds by sending a signal to a smartphone.

Thus far, the team has exposed the DNAgel to wound swabs from 18 people’s wounds to see how much the material degraded in the presence of the bacteria. There searchers also used the device on six living lab mice whose wounds were exposed to the same bacterial species, and it successfully detected infections.

1. What is the first paragraph mainly about?

A．The harm of common wounds.

B．The treatment of infected wounds.

C．The intervention on wound healing.

D．The dilemma of infection observation.

2. How does the WINDOW sensor detect infections?

A．By comparing wound acidity.

B．By detecting the DNase enzyme.

C．By measuring the bacteria amount.

D．By observing changes in wound color.

3. What can we expect of the WINDOW sensor in the future?

A．It will cut down the length of infection-treating.

B．It could reduce the cost of infection observation.

C．It can monitor wounds continuously and remotely.

D．It might help conduct laboratory tests on wounds.

4. What can be the best title for the text?

A．Innovations in Wound Infection Detection

B．Removing the Dangers of Open Wounds

C．Recognizing the Role of DNase in Healing

D．Challenges in Wound Care and Treatment

9 . Apply for the 2024 –2025 School Year

We are thrilled you are considering Marist School for your child’s next chapter. Marist has two primary entry points for students in 7th and 9th grades to which we typically accept 150 and 50 students respectively.

Marist School utilizes Ravenna, an application management system, for all aspects of the admissions process. Through Ravenna, parents can access the Marist application, submit supporting materials, track application status, and view admission decisions. Our application for the 2024 - 2025 school year will be available late September with a January 22, 2024 deadline.

Importantly, Marist continues to require the SSAT as part of the application process. On Saturday, January 6, 2024, Marist will serve as a community test site for the SSAT. This is the last national testing day prior to our application deadline when a first set of SSAT scores is due.

Important Dates

September 2023 - March 2024	Marist School admissions events
Late September 2023	Marist 2024 - 2025 application available in Ravenna
October 2023 - January 2024	Required SSAT testing
December 3, 2023	Open Heuse
January 22, 2024	Deadline to apply to Marist; preliminary application and fee, parent and student questionnaires, and a first set of SSAT scores are due
February 1, 2024	Deadline for Marist to receive any outstanding supplemental materials;     transcripts, teacher and administrator evaluations, and parish/church verification form are due
February 12, 2024	Deadline to submit separate tuition assistance application
March 30, 2024	AAAIS common notification date
April 11, 2024	Deadline to respond to offer of admission

1. Who is this article mainly intended for?

A．Students in all grades.	B．Students in 6th or 8th grades.
C．Parents of children in 6th or 8th grades.	D．Parents of children in 7th to 9th grades.

2. What do we know about Ravenna?

A．It deals with entry applications.	B．It promotes school management.
C．It is accessible the whole school year.	D．It monitors the admissions process.

3. Which can be a possible date for applicants to submit teacher evaluations?

A．August 30, 2023.	B．January 26, 2024.
C．February 3, 2024.	D．March 30, 2024.

10 . In a world that often feels fast-paced and restrained to routines, the desire for van (房车) life and mobile living has captured the hearts of many seeking an alternative lifestyle.     1     From the freedom to explore new horizons to fostering a minimalist mindset, here are some captivating advantages of embracing van life.

Liberation from Materialism

The confined space of a van encourages a minimalist lifestyle, where experiences are valued over possessions.     2     With minimal monthly expenses, such as parking fees and fuel costs, van dwellers can allocate resources to experiences rather than high rent or house payments. This mobile living is supported by the degrowth movement, which believes that economies should focus on securing the minimal basic needs instead of consumption and consumerism.

Exploration and Flexibility

The ability to follow adventure wherever it takes you is one of the most amazing aspects of living in a van. You can choose to wake up at dawn over the ocean one day and find yourself in a forested mountainside the next. Living in a van frequently involves being close to the outdoors surrounded by the beauty of nature.     3    

Minimal Ecological Footprint

    4     They adopt solar panels and efficient water systems , further minimizing their impact on the environment. People who choose to live in mobile homes believe that eventually, global warming and extreme weather might bring an end to sedentary (定居的) living patterns.

Through the open road, the beauty of nature, and the friendship of fellow adventurers, van life presents a unique avenue for enriching the human experience.     5    

A．It’s thrilling to travel the world.

B．Many van lifers tend to go green.

C．Living in a van can often be more cost-effective.

D．They’ll find a sense of freedom of constant exploration.

E．The natural world becomes an essential part of your daily life

F．Better yet, it offers a way to reconnect with the essence of living.

G．The concept of van life offers benefits beyond just a change of scenery.