修改时间：2024-07-13 浏览次数：404 类型：月考试卷
South Africa is the water-lovers' paradise. Whether you want to be by the sea, on the sea or even under it, there are countless ways to get your ocean experience. Almost all of them are located on South Africa's east coast, where the Indian Ocean keeps water warm.
Thompson's Bay, Ballito
Drive 40 minutes north of Durban to reach the unique coastal town of Ballito. Popular with holidaymakers, Ballito has a choice of pretty beaches—- and the best for swimming is
Thompson's Bay. This scenic cove (小海湾)is sheltered from the wind and characterized by its calm waters, interesting rocky outcrops and a fascinating geological hole-in-the-wall. There's a walled tidal pool for those who are nervous to swim in the open ocean, making this spot a particularly good choice for families.
Umhlanga Rocks, Durban
Located a 20-minute drive from central Durban, the resort town of Umhlanga is an upmarket getaway for vacationing South Africans and visitors in the know. The main Umhlanga Rocks beach boasts safe swimming waters and endless golden sands, again protected by lifeguards and shark nets. A paved walkway provides direct access to the town's beachfront shops, restaurants and bars.
Gonubie Beach, East London
The coastal town of Gonubie is seen by many as a suburb of East London, one of the largest cities of the Eastern Cape. Its picture-perfect beach offers great swimming areas in the open sea. The Gonubie River reaches the sea at this point, too, and offers an alternative bathingspot on days when the surf is bigger than usual. All along the river's green banks, you'll find a series of shaded spots perfect for summer picnics and barbecues.
Alison Malmon was ending her freshman year at the University of Pennsylvania. US, when she got the news: Her older brother Brian, a student at Columbia University; was suffering from mental illness.
Inspired by this, Malmon formed a group at her university to organize students to talk openly about mental health. It soon blossomed into a national organization that today has more than 450 campus chapters. Leaders with the organization spend their time talking with college students about the pressure that today's young people face.
"What you hear often is just a need to be perfect," said Malmon, "and a need to present oneself as perfect." A new study in the UK proved that this need for perfectionism is simply part of today's society. In the study, two researchers studied more than 40,000 students from the US, Canada, and the UK. They found that what they called "socially-prescribed (社会定向型的) perfectionism" increased by a third between 1989 and 2016.
Lead researcher Thomas Curran said that while so many of today's young people try to present a perfect appearance online, social media isn't the only reason behind this trend. Instead, he said, it may be driven by competition in modem society, meaning young people can't avoid being sorted and ranked in both education and employment. That comes from new normal situation like greater numbers of college students, national examination and parenting that increasingly emphasizes success in education.
For example, in 1976, half of high school seniors expected to get a college degree of some kind. By 2008, more than 80 percent expected the same. The researchers also said changes in parenting styles over the last two decades might have had an impact. As parents feel increased pressure to raise successful children, they in turn pass their "achievement anxieties" onto their kids through "too much participation in their child's activities or emotions
Those in the mental health community like Malmon say they're concerned about the impact the culture of perfectionism has on mental health on campuses. "Mental health has truly become this generation's social justice (公正)issue," she said. "It's our job to equip them with the tools and to let people know that it's not their fault."
a. The impact of social media.
b. Parents' high expectations of their children.
c. The decreasing number of college students.
d. The fierce competition in society.
e. Their desire to draw their parents' attention.
If you're a fan of smart technology, you may have had some sleepless nights lately. That's because Alexa, the artificial intelligence (AI) behind US company Amazon's Echo smart speakers, has been "letting out an unprompted (自发的),creepy (令人毛骨悚然的)cackle for no apparent reason, according to BBC News.
Many social media users shared their stories of Alexa scaring them with the seemingly unprompted laugh.
"Every time Alexa laughs, an angel dies," Tesla and SpaceX founder Elon Musk joked on social media.
On March 7, Amazon released an update that fixed the problem, saying that the laugh was caused by Echo devices mistakenly thinking that users had said the command " Alexa, laugh".
However, what should have been a funny story raised the ongoing topic of man versus machine.
With the rise of artificial and robotic technology, "Digital machines started to demonstrate broad abilities in pattern recognition, complex communication, and other area that used to be particularly human," wrote Erik Brynjolfsson and Andrew McAfee in their book The Second Machine Age: Work, Progress, and Prosperity in a Time of Brilliant Technologies. They believe that AI will "do more and more, and our lives will get better".
However, ever since the earliest days of AI there have been concerns that some day, software will take over the world, leaving the fate of humans unknown.
"With artificial intelligence we are order the demon (魔鬼)Musk told students during a meeting at MIT in 2014. "If I had to guess at what our biggest existential threat is, it's probably that. So we need to be very careful
Many scientists have shared the same concern. The late British physicist Stephen Hawking said at a technology conference in Portugal in November that "computers can. in theory, imitate human intelligence, and exceed it ••• AI could be the worst event in the history of our civilization."
If creators are to safely control AL however, Hawking suggested that they "employ best practice and effective management".
I am an optimist and I believe that we can create AI for the good of the world," he said at the conference. "We simply need to be aware of the dangers, identify them, employ the best possible practice and management, and prepare for its consequences well in advance."
Have you ever imagined what it would be like to see the world through an animal's eyes? For example, what a chimpanzee sees as it sits at the top of a tree, or a penguin's view as it dives into the sea to catch its dinner?
These questions are answered in the nature documentary Animals with Cameras, produced by the BBC. The three-part series was first aired in the UK last month. To explore animal stories "told" by the animals themselves, the documentary's filmmakers worked with scientists to develop cameras that wild animals could wear.
"Never before have we seen such high-quality footage (连续镜头)directly from the animal's point of view, " BBC Nature executive producer Fred Kaufman told PBS." This miniseries greatly expands our comprehension of animal behavior and this camera technology opens up new possibilities for discovering so much more."
Indeed, the groundbreaking technology provides a new viewpoint of the animal kingdom. New cameras with enough battery life to shoot for hours at a time were designed to be comfortable enough for animals to wear, according to the documentary's camera designer Chris Watts.
The technical challenges didn't stop there. Some animals were very curious about the equipment, with some even fighting each other for the chance to wear a camera. In the case of chimpanzees, "we had to create dummy (仿造的)cameras, so that every chimpanzee could get one", the miniseries' wildlife cameraman Gordon Buchanan told Live Science.
For animals that were comfortable enough to be with human beings, the cameras could be fitted and removed by hand. But for others, the cameras came off automatically using a timed release and were collected afterward. This meant that the cameras needed to be as tough as possible.
To avoid disturbing the animals, scientists who were good at dealing with wildlife came to help by putting the cameras on the animals." The last thing we want to do is cause them distress." the documentary's producer Dan Rees told the BBC. "To follow an animal in the first place, there had to be a clear benefit in terms of knowledge about it that might be useful to protecting a species in the future.
Their efforts certainly paid off. " Footage that captures (捕捉)these rare and exciting glimpses of animals bidden habits is important to scientists, but documentaries like Animals with Cameras also resonate with (引起共鸣)audiences, connecting them with the beauty - and danger - of wildlife in their natural environments," Live Science noted.
AL's friend Rachel invited him to go to the lake for the day with her family. Rachel really hoped he'd say yes.
AL turned Rachel down. He worried that her family and others at the lake would see what he saw when he looked in the mirror a strange excuse for a man.
The truth about guys.
Many people think of guys as being carefree when it comes to their appearance. Guys might think that they shouldn't worry about how they look, but body image can be a real problem for them. Unlike girls, guys are less likely to talk to friends and relatives about their bodies and how they're developing. Without support from friends and family, they may develop a negative self-image.
Why is body image important?
Body image is a person's opinions, thoughts, and feelings about his or her own body and physical appearance. Body image is part of someone's total self-image. So how a guy feels about his body can affect how he feels about himself. If he gets too focused on not liking the way he looks, a guy's selfesteem can take a hit.
How does puberty （青春期）affect body image?
Although body image is just one part of our self-image, during the teen years, and especially during puberty, it can be easy for a guy's whole self-image to be based on how his body looks.
It could be in your genes (基因).
Lots of guys can have high expectations for puberty, thinking they'll develop quickly or in a certain way. You can look at your uncles, grandfathers, and even female relatives, to get an idea of the kinds of choices your genes may have in store for you.
A. You may hear a lot about being a tough guy.
B. He like Rachel, too, but was self-conscious about taking off his T-shirt.
C. Having a positive body image means feeling pretty satisfied with the way you look.
D. The good news is that self-image and body image can be changed.
E. But the reality is that a lot of guys spend plenty of time in front of the mirror.
F. The best way to approach your own growth is to look at everyone in your family.
G. That's because our bodies are changing so much during this time that they can become the main focus of our attention.
Do birds have a favorite color? It's probably not a question you've ever 1 but a project designed to answer that question led to two British schoolboys 2 the Young Scientist Award of the year after presenting their 3 to a group of judges.
The boys' 4 to find out whether birds have a(n) 5 for a particular color came purely from scientific curiosity. Both of them are very 6 about nature and the power of colors in things, 7 they worked as a perfect combination and 8 a citizen science project that didn't require fancy equipment.
The boys 9 bird feeders in their back gardens. Each garden had five feeders, colored blue, green, red, yellow and transparent. They made sure to change the position of the feeders regularly, 10 it affected the results and then placed a 11 for an hour each morning, afternoon and evening across all four seasons to 12 birds visiting each feeder. They collected 13 covering a total period of 400 hours.
When the experiment finished, they had recorded the birds' 14 to the gardens added up to 3,205, with over a third being to the 15 feeders. It was a conclusive win for blue. The pair believe that blue is 16 to birds because of its familiarity, while red and yellow are often 17 of poison in nature.
Later, the boys considered 18 for their findings, such as using the less popular colors of red and yellow to 19 bird strikes on planes. There seems to be quite a strong connection between the 20 of planes and the number of bird strikes.
It seems to be something in our blood makes human beings want to conquer (征服)" things by climbing them, no matter whether it's Qomolangma — the (high) peak on Earth — Uluru, a big rock that sits 348 meters above the ground in the central Australian desert. Many (visit) to Uluru climb the rock even though there's no road to it, except for a chain-and-pole path that's been hammered into the rock by early explorers. There's even a sign at the bottom of the rock (write) in seven languages, reading: "Please don't climb."
For starters, the rock has spiritual significance for the local Aboriginal people, and (set) foot on it is considered disrespectful. Other concerns include some people leaving litter on top of the rock, and some even urinate (撒尿)on it since there's no toilet up there. When it rains, the human waste is washed down onto the rock, which can be (harm) to the environment. Also, according to ABC News, 35 people (die) so far trying to climb it. This is the Australian government announced earlier this month that climbing Uluru (ban), starting from Oct 26, 2019.
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In most cases, the very first thing that we ask for when visit a cafe or friend's house is the WiFi password. It's almost like the internet has become one of your basic needs. And according to technology website Digital Trends, up to 60 percent of people in the world still didn't have an internet connection. The situation is even more worse in the least developed countries—only one tenth of the people has regular access to the internet. That's why in the recent survey in the US, 68 percent of the respondents think of internet access to a privilege instead of a human right.
However, the United Nations made this clear in a report back in 2011 that it believes internet access should be a human right, and it "should be a priority (优先考虑的事)for all states" to make sure everyone has access to the web.
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