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    Which boy hasn't dreamed of being a cool secret agent (特工)? The wonderful fighting abilities and the world-saving adventures are much more colorful than most people's everyday lives. Well, Cody Banks is just like any other boy, except that he is not just dreaming. He has a big secret his friends never know about. He was trained to be a spy (间谍）by a special CIA programme, which was made to look like a summer camp. He learned high-speed driving, hand-to-hand fighting and the use of high-tech tools.

    After proving he could become a young hero by saving a baby from a runaway car, Banks gets his first real task. He must make friends with a popular girl at school, Natalie Connors. Then, he must spy on her father, a scientist who has developed a dangerous technology (技术).Banks must stop a group of bad people from forcing Natalie's father into using the technology to endanger the world.

    The CIA may have taught him first-class self-defense moves, but they didn't show him how to talk to girls. Banks has zero ability when it comes to dealing with girls. How can he get around his problem and get an invitation to the girl's upcoming birthday party? Will he finally become Natalie's boyfriend and find out whatever he can about her father's work?

    Agent Cody Banks has everything that young people are interested in: big explosions, breath-taking performances and funny girl-dating experiences. It was listed No.2 in the American box office last week.

    “This story is interesting and fun for the whole family to enjoy, and especially cool for young boys，” said Paul Perkins, a film reviewer in the US.

    While the start of a new school year is always exciting, this year was even more so for some elementary school students in Auckland, New Zealand. They became the world's first kids to be “taught” by a digital teacher, Will. Will is just an avatar(用户头像) that appears on the student's desktop, tablet, or smartphone screen, not a human-like robot walking around the classroom.

    Auckland energy company Vector and AI company Soul Machines worked together to develop Will, which has been modeled after the human brain and nervous system, allowing it to perform human-like behavior. The digital teacher is currently assigned to teach Vector's “Be sustainable with energy,” a free program for Auckland elementary schools.

    Just like the humans it replaced, Will is able to instantly react to the students' responses to the topic. Thanks to a webcam(网络摄像头) and microphone, the avatar not only responds to questions the kids may have, but also picks up non-verbal cues(非口头提示). For instance, if a student smiles at Will, he responds by smiling back. This two-way interaction not only helps capture the students' attention, but also allows the program's developers to monitor their engagement, and make changes if needed.

    Vector's Chief Digital Officer, Nikhil Ravishankar says, “What was fascinating to me was the reaction of the children to Will. The way they look at the world is so creative and different, and Will really captured their attention.”

    Will, in place since August 2018, has been a great success thus far. However, regardless of how popular it becomes, Will is unlikely to replace human educators any time soon. For one, the avatar's knowledge base is severely restricted. But more importantly, even the smartest digital avatars could never predict and react to all the unexpected situations that educators have to deal with on a daily basis. However, it could come in handy as a “personal tutor”, providing kids with one-on-one help on specific subjects or even topics.

    Last year, on report card day, my son and a bunch of his 13-year-old friends piled into the back seat of my car, ready for the last-day-of-school party at McDonald's. "Jack got a laptop for getting straight A's, and Laurie got a cell phone," one boy said. "Oh, yeah, and Sarah got an iPod Nano, and she's only in third grade," said another. "And how about Brian? He got $10 for each A."

    I suddenly became concerned. These payoffs might get parents through grammar school, but what about high school and beyond? What would be left after the electric guitar, the cell phone, and the portable laptop?

    I saw the road ahead: As the homework load increased, my income would decrease. I saw my comfortable lifestyle vanish before my eyes — no more of those $5 bags of already-peeled organic carrots. No more organic anything!

    I started to feel surprised and nervous. Would every goal attained by my two children fetch a reward? A high grade point average? A good class ranking? Would sports achievements be included in this reward system: soccer goals, touchdowns(橄榄球触地得分(, runs-batted-in(棒球打点得分(? What about orchestra(管弦乐团(? Would first chair pay more than second? I'd be penniless by eighth-grade graduation.

"We never paid anything for good grades," said my neighbor across the street, whose son was recently accepted at MIT. "He just did it on his own. Maybe once in a while we went out for pizza, but that's about it."

    Don't you just hate that? We're all running around looking for the latest electronic products, and she's spending a few dollars on pizza. She gets motivation; we get negotiation.

For centuries Antarctica has attracted people from around the world. Explorers sought to travel there. Scientists have studied weather, wildlife, and geology there for decades. {#blank#}1{#/blank#} In the last few decades, though, scientists have reported that the ice is melting.

 {#blank#}2{#/blank#} That's a difficult question to answer. The loss of ice in Antarctica has not been linear (直线的). That means it isn't a steady decrease. In fact, the rate of melting can vary greatly from year to year. Still, scientists warn that the continent's ice sheet is shrinking.

{#blank#}3{#/blank#} Climate change is warming the world's oceans and affecting the currents (洋流) of the Earth's oceans. These currents are bringing more warm water to Antarctica than ever recorded.

Today, the planet is warming at a rate that alarms scientists. {#blank#}4{#/blank#} The effects of such a rise could cause major problems. It will increase flooding, especially in areas near shores. A large rise in sea level could even make some regions uninhabitable. This could cause millions around the world to become climate refugees (难民).

Can humans stop Antarctica from melting? Probably not — but experts do believe people can slow the process. How can you help? Pay attention to your carbon footprint. {#blank#}5{#/blank#} Only changes on a large, global scale (范围) can truly make a difference to Antarctica.

A. How quickly is Antarctica melting?

B. Is human activity contributing to the melting of Antarctica's ice?

C. The ice of Antarctica is the result of thousands of years of snow.

D. West Antarctica is the region most affected by these warm waters.

E. Talk with your family about ways to reduce your use of fossil fuels.

F. If this continues, melting ice could lead to a serious rise in sea level.

G. Experts say the melting of Antarctica's ice sheet is caused by rising temperatures.

As the world deals with the rising temperatures brought by climate change, the demand for cooling solutions in hot, dry regions becomes increasingly pressing. However, traditional air conditioning systems produce massive greenhouse gases and use lots of energy.

Facing these challenges, a research team from McGill University, UCLA, and Princeton have found an inexpensive, sustainable cooling method. Their approach not only offers a solution for cooling but also promises to address the problem of heat waves during electricity blackouts.

The researchers set out to achieve a new standard in passive cooling (无动力制冷) within naturally conditioned buildings in hot climates such as Southern California. They aimed to address an important question: how can passive cooling techniques outperform traditional air conditioning units and improve indoor comfort?

The key to this breakthrough lies in harnessing the potential of radiative (辐射的) cooling materials, specifically in the context of housing design. Traditionally, such materials have been employed to prevent roofs(屋顶) from overheating and improve heat rejection from cooling systems. However, the research team recognised that there is under-explored potential in integrating these materials into building design — they can not only remove waste indoor heat but also drive regular and healthy air changes.

Lead author Remy Fortin stated, "We found we could maintain air temperatures several degrees below the surrounding temperature."Remarkably, they achieved this success without giving up a healthy airing. This was never a piece of cake, considering air exchange can unintendedly introduce heat into the building when the goal is to keep the inside cooler than the outside.

The researchers are hopeful that their findings will be used to positively impact communities suffering from climatic heating and heat waves. Salmaan Craig, the principal researcher expressed their expectations: "We hope that materials scientists, designers, and engineers will be interested in these results and that our work will inspire more broader thinking for how to integrate breakthroughs in radiative cooling materials with simple but effective solutions."