—Yes. I think so. It costs parents a lot.
—Let's be careful.
— Yes. This accident was ________ his careless driving.
— I am going to do some voluntary work to help people____.
—No. It _______ when the rocket went into the clouds.
—That's why most of living things in this river have died out and the rest of them are in danger.
— Yes, it brings us a lot of____and fun.
—Because Yale____his application.
— I'm really____it. He works hard and never makes any mistake.
For the last few years, Elijah Cossio, a Houston teen, has been assisting his mother Tina Hernandez with her hospital bills by holding a daily bake sale after school. The 14-year-old boy 1 wakes up at 5 a. m. and bakes desserts each day before school. Once the classes have ended, he 2 his homemade goods to classmates, parents and community members. Hernandez, a mother of three who nearly3 an infection（感染） in 2017，was proud of her son.
However,Elijah's baking hobby wasn't something he ever 4 to be doing in order to support his mother and siblings（兄弟姐妹）. ＂My mom has always taught me to work for what I want because nothing is 5 to me for free. "
The teen's world was 6 upside down when his mother became ill. After she improved,Hernandez said she had to "relearn everything", which included 7 tasks, like using the restroom. Elijah knew he had to help support her because of her 8
At that point, Elijah was already selling baked goods on the weekends to earn some extra cash. As his skills have already been 9 , he decided to increase his income by selling homemade desserts every day after school.
"There's more to 10 than just sitting and playing games," he explained. "I was raised to go and get what I want, so I went and got it. "
From using a smiling emoji in messages to saying "cheese" when taking photos,most people believe that a smile is a sign of happiness. 1 some scientists don't think so. The2 between smiles and happiness was recently studied by researchers at Brighton and Sussex Medica School (BSMS) in the UK. Their3 found that smiling doesn't necessarily show a person's gladness. Instead, it can usually 4 a tool in social contact. In the study, 44 people aged between 18 and 35 took part in a quiz. The 5 had to answer nine difficult questions, while their facial expressions were recorded by computers. The participants were then asked to rate（评估）their own experiences when answering the questions. They were given 12 different emotions to 6 including "bored" and "interested". According to Science Daily, people always 7 the experiences that made them smile with ＂engagement（参与）＂， 8 ＂happiness＂ or ＂interested＂. We normally associate a smiling person with cheerfulness. 9 ,a smile is more likely to be caused by a feeling of10 reported Indian newspaper The Asian Age. In order to 11 explain these results, the researchers checked the12 of the participants answering each question. According to the journal News Medical,the participants didn't show any signs of smiling in their images when they were trying their best to find out the right answer. However, when they were told whether their answer was13 or not, they smiled. And more 14 they smiled more often when their answers were incorrect. It showed "their enjoyment of this game, "according to Science Daily. "This 15 could be explained by self-ratings of engagement, rather than by ratings of happiness or frustration," body language expert Harry Witchel told Science Daily.
Finally came Wednesday! I walked onto campus feeling nervous even though I had walked these same grounds for two years because my junior high school is next door. Everything looked and felt different now that I was in senior high school.
I looked at my schedule. First period — German. Our German teacher was very friendly and I liked her from the beginning. What I didn't like, though, was that I was surrounded by students from other grades, with only five familiar faces.
Then I had to walk all the way across campus and up three flights of stairs to get to my second period — biology. Our teacher's name is Ms. Compeau, and I think that she will teach us a lot this year because she is very to the poit. She also has her unique way of saying "be quiet", she says "alligator". She explained that she is the king, or should I say queen, of the class because alligators are the "king of the swamps（沼泽）＂.
My third class was English. After surviving two periods without too much of a challenge,I began to feel good. However, the third period changed everything. Mr. V. , my English teacher, told us that we would have to write 40 essays and read AP-level books such as The Odyssey this year. I love reading and writing, but 40 ESSAYS? AP-level books? Now I was scared. He also talked about how important it was to be focused. Last year was not a very "focused" year for me. While doing homework, I was often talking on the phone, or busy with a conversation on Facebook. I planned on stepping it up this year because I wanted to stay an honor student.
You may not realize it, but you are doing much more than just studying when you are at school. School is also the place where you learn to get on well with people. But this is not always easy. What can you do if you just don't like one of your classmates?
If you discover that you have problems getting on with your classmates or friends, the most important thing to learn is tolerance. Tolerance is the ability to realize and respect the differences in others. We cannot change the way that other people do, so it is important to learn to live happily with them.
Tolerance will make everyone get on better with each other. Getting to know someone may help you understand why they do things differently. Something different does not exactly mean that it is bad. Tolerance teaches us to keep a temperate and open mind.
You need to remember an old saying, "Treat others how you want to be treated". If you tolerate something, it does not mean that you have to like it. No one is asking you to change who you are or what you believe in. Tolerance just means that you should respect the differences in others and not try to make them change.
It is important to practice tolerance, because it will make everyone's life easier. Learn to accept people for their different abilties and interests. The world is very different, and practicing tolerance in your own school and city can help make a difference.
Science fiction is a popular kind of writing, and many people think of Jules Verne as the father of science fiction. He was born in France in 1828. His father wanted him to become a lawyer, but from his early 20s Verne decided to become a writer. At first he wrote plays for the theater. Then,in 1863,he wrote a story called Five Weeks in a Balloon. The success of this book encouraged him to write more stories such as A Journey to the Center of the Earth (1864) and From the Earth to the Moon(1865).
In the 19th century, many people were interested in science and inventions. Jules Verne wrote about scientific subjects in his stories and, as a result, they were very popular. Verne's writing included many predictions for the 20th century and many of them came true. He described space flight,movies,and air conditioning, a long time before they appeared. These books were very successful and they made Verne rich.
Jules Verne's books have been the subjects for many movies. 20,000 Leagues under the Sea was a successful movie for Walt Disney. It was the first time that Disney movie had used real actors instead of cartoon drawings. Around the World in Eighty Days is another famous movie based on one of Verne's books. The main character is an Englishman called Phileas Fogg. For him, the most important thing is to be always on time!
You＇ve probably learned that bears eat a lot before hibernating（冬眠），putting on weight suddenly. It's an enviable practice, because those bears don't have the same health problems as fat people. A study published in Cell Reports has found that it might be due to the bear＇s friendly gut microbes（肠道细菌）.
In summer, bears go through an extreme period of eating, while they eat nothing about six months during winter hibernation. To compare the microbiomes of both seasons, the researchers collected the samples of their waste from 16 wild bears during hibernation and in summer. What they found is that the bear's lifestyle changes dramatically with seasons. During hibernation, the kinds of microbiomes became less than the summer samples.
To find out how that might affect metabolism（新陈代谢），the researchers transferred the microbes from the winter and the summer into lab mice. Mice with the summer microbes gained more weight than those with the winter microbes. However, those fatter summer mice weren't different from the winter mice in their glucose（葡萄糖）metabolism. ＂Thus， the bear may be atypical model for healthy obesity（肥胖） and studying hibernation might be a promising approach to developing new treatments for obesity," the authors write.
However,there are still more researches needed before humans benefit from bear gut microbes. The researchers note that relying on free-ranging wild bears means they know little about their food intake and other habits. And though they were able to produce interesting metabolic results in mice,mice are quite different from humans. And another research suggests that exposure to cold can also change the composition of gut bacteria, improving glucose metabolism and fat burning abilities in mice.
This was Liu Yao's first year not to return home for Spring Festival. Instead, the junior student stayed on duty at the National Cross-country Skiing Centre in Zhangjiakou, one of the competition sites of the Beijing Winter Olympics.
Wearing a blue and white down coat, and, of course, a mask, Liu serves as a transport services assistant with two other volunteers.
It is cold in Zhangjiakou, especially after sunset, so wrapping up is essential if the volunteers are on duty outside. If it's too cold, theyshorten the intervals to 30 or 20minutes.
When Liu began dealing with the first Olympic arrivals, she said she was afraid she might give them the wrong directions because she was not totally familiar with the site, and felt a little nervous to speak English with foreigners. Having been busy chatting to people from all over the globe, Liu now realizes she has much to improve on as regard her language skills,and this has motivated her to work harder in the future.
"The Games are a major event, and being a volunteer makes me feel so proud of myself when I can make contributions to the country and society," Liu said.
She feels that her volunteer work has also broadened her horizons, providing her with a platform to connect with people from around the world. "I feel that people are very friendly,and that everyone gathers in Beijing because of love for sports," Liu said.
A. They are equipped with lots of hot packs and change shifts every 45 minutes.
B. Their working hours depend on the competition times.
C. Being a volunteer has given her the opportunity to level up her English skills.
D. Participating in Beijing 2022 has also given the youngster a sense of responsibility as a host.
E. They are mainly responsible for vehicle scheduling and providing traffic information for the Olympic family.
F. All of this gives her the impression that this is a pure sporting gathering.
G. They have been stationed in the center since late January.
A. Do you want to lose weight and be healthier? Yes. Do sports. I'm sure it can help you become slim. No sport is bad for your health. But if you breathe with difficulty, you can be with swimming or jogging.
B. Don't worry. Sport is good for your health. Of course, you can't do too much and you must go to your doctor and ask for advice. Of course you must exercise slowly at first. If you do sports every day, your heart will get stronger.
C. Scientists say sports are helping people to learn or remember. If we can do sports three times a week,it is good for us. For example, jogging is very good exercise. If we often jog in a week, we can live longer.
D. Why not try your best to take more exercise? It's good for your health. If you are strong enough, the illness will go away from you.
E. It is very important to do sports. People who work long hours have to do some exercise, especially if they work in an office or have to sit down at work. You can find a place near your work or your home to do sports so it won't take you long to get there.
F. Yes, rest is very important. It is also important for you to do some exercise. Sport is also a way of relaxation. It helps you to eat well and rest well. It's good for your health.
