Oceans make up about 71% of the earth’s surface. They’re important to the health of the earth and human beings. However, up to now, just 5% of the ocean has been explored and less than 10% has been mapped using modern technology. If we can send satellites（卫星）millions of miles into space, then why has so little of the ocean been studied?
One reason is that the ocean is not as simple as it seems to be. We’ve always been able to study the ocean’s surface. But we’ve only just started looking into the deep ocean within the past thirty years. Satellites have helped us study the ocean’s surface. If we want to dig deeper, more advanced（高级）technology is needed. But when we reach the deep ocean about 200 meters or more below the ocean’s surface, we will enter complete darkness. At these great depths, it’s very dark and cold and the pressure is deadly.
As you can see, deep sea exploration is difficult. But there is still hope to learn more. Many organizations arc making efforts in ocean exploration. “Scientists arc supported to study unknown and little-known areas”, a spokesman from one organization said. It’s hard to protect our ocean if we know so little about it. And there are many reasons why we should protect it. The main reason is that the ocean produces more than half of the world’s oxygen（氧气）.
1. How much of the ocean has been mapped up to now?2. Are humans looking into the deep ocean nowadays?
3. What is the ocean like at the great depths?
4. Who are supported to study unknown and little-known areas?
5. Why should we protect the ocean according to the passage?
相似题推荐
【推荐1】More Youths Answer Xi’s Call in Science
Chinese researchers get younger and help nation make great progress in science.
During a discussion with some of Chinese youth, President Xi Jinping called young people “the most energetic and creative group of our society” and said that they should “stand in the front of changes and creation”.
Chinese young people have heartedly answered President Xi’s call. Since then, there has been a notable development that Chinese scientists in their 30s are the backbone of some of the country’s greatest scientific and technological fields. In 2018, the average（平均的） age of the researchers in China’s science and technology fields was 35.9, down from 36.8 in 2013 and 37.4 in 2008, according to a survey made every five years by the China Association for Science and Technology.
This trend is shown among the scientists and engineers working on the FAST, which is also known as “Sky Eye”. It has a research workforce hat is mostly in their 30s.”People often called out team a good example, but we were just a group of ordinary people who joined the project in our 20s, and worked tirelessly for it into our 30s and 40s,”one of the team members said.
Yao Rui, a researcher who joined the FAST team at the age of 28, said that “Having a problem is the least of my worries, because wherever there is a problem, there is a chance to work it out,” she said. “As a young scientist, I am so lucky that I can not only meet the needs of the nation, but also release my personal passions, so I can improve and grow together with my country.”
Sun Jinghai, 38, said he had spent the last 15 years at FAST perfecting and protecting the giant machine. “And I gave my youth to the science research, and it helped me grow in return, enlarged my professional knowledge, and rewarded me with confidence as I overcame a lot of obstacles and failures,” he added.
1. What’s the change of researchers’ age?2. 将划线句子Having a problem is the least of my worries, because wherever there is a problem, there is a chance to work it out翻译成汉语。
3. 列举科学研究给年轻科研者带来的两个益处。
4. 从文中找出 “We were only a crowd of common people, although we were often praised as a model.”句子意思相同或相近的句子。
5. 根据短文内容填空。每空一词。
Chinese young people become the
Air
Air has no smell.
Air has no taste.
But when the wind blows,
You feel it on your face.
Look at a kite,
Or a plane in the air.
How do they stay there?
They ride on air.
How does a balloon
Rise in the air,
And lift people up?
It uses hot air.
We need air to breathe.
We need air to survive.
And when we breathe it,
It keeps us alive.
1. What is the passage above?
2. When can we feel the air?
3. How does a balloon lift people up?
4. Can we live without the air?
【推荐3】DNA is the whole “map” of the human body. It is something that all humans have, and it tells the body what to do. DNA is the reason that we look like our parents, because we get some of their DNA to make our own.
People have been trying to understand the human body for a long time. In 1860, Mr. Mendel discovered why we look similar to other people in our family. It is because of small things called “genes” in our body. In 1953, two scientists, Watson and Crick, found out that those small parts are real messages. They are written in the DNA with a special language.
In 1961, another two scientists found the first “word” that they could understand in that language. It shows how DNA tells the cell （细胞） to build its parts. So far, scientists have found all the words in the DNA map, but we do not understand what they all do. By understanding what just one “word” means, we can help to save people from several illnesses. So the more we understand, the more doctors will be able to do.
Most people hope that this will help to make better medicine to help sick people. Other people worry that when we learn more “words” and find out more information, we will use it in the wrong way, just to make people more attractive, or stop sick people getting jobs.
根据短文内容，请用完整句子回答下列问题。
1. Why do we look like our parents?
2. What did the two scientists find in 1961?
3. How can we help sick people if we understand more “words” in the DNA map?
4. What does the underlined word “They” refer to?
5. What can we know from the last paragraph?
【推荐1】It's 4:54 a. m. on a November morning in 2016 in Yosemite National Park, the United States. The moon shone over the south-west face of El Capitan. Alex Honnold was alone. He held on tightly to the rock with nothing but the tips of his fingers and two thin edges of shoe rubber. He was trying to do something that had been considered impossible-a "free solo" (徒手攀岩) up the world's most dangerous cliff.
Some people think free soloing is a meaningless sport. The sport, they say, has claimed the lives of many professional climbers. Others think mastering a mountain with only excellent physical and mental skill is the essence of climbing. Such was the attitude of Paul Preuss. Preuss was the father of free soloing. By the age of 27, he had made about 150 ropeless climbs He was admired (钦佩) throughout Europe. Then, on October 3,1913, he fell to his death while free soloing a cliff in the Alps (阿尔卑斯山).
But Preuss's ideas lived on. They have influenced generations of climbers. In the 1960s, the "free climbing" movement was born. The movement supports using ropes and other gears (设备) but only as safety devices. The next serious free soloist appeared in 1973. Henry Barber climbed a 460-meter-tall rock in Yosemite without a rope. In 1987, Peter Croft, a Canadian, free soloed two of Yosemite's most dangerous routes in one day.
Croft's achievement stood until 2007. That year, 22-year-old Honnold showed up in Yosemite. He surprised the world by repeating Croft's masterpiece. The next year, he free soloed two famously difficult routes in America. The routes were so dangerous that no one had imagined they could be climbed without a rope.
Now, as fans celebrate his achievements, Honnold is preparing for his next big goal. Thousands of moves are still to come. Honnold is on his way to completing the greatest rock climb in history.
1. How many ropeless climbs had Paul Preuss made by the age of 27?2. On October 3,1931, Preuss
3. The "free climbing" movement was born
4. Alex Honnold repeated Peter Croft's masterpiece
5. Now, Honoold is on his way to
The Rocky Mountains
The Rocky Mountains are a large group of mountains on the North American continent (洲). The Rockies are found in the western part of North America. They stretch (连绵）from Canada in the north to the United States in the south. The southern part of the Rockies ends in the state of New Mexico.
The Rockies are the longest mountain range in North America. They have many high peaks (山). The highest is Mount Elbert in Colorado. It is nearly three miles high.
In summer, the Rockies are warm and dry, though it does rain sometimes. During the winter, the weather is wet and cold. Heavy winter snow falls in the higher parts of the Rockies.
Many people like to visit these mountains. They ride bikes, hike on trails, ski, or fish. A special area called Rocky Mountain National Park is in Colorado. The national park is reserved (留出) for people to visit. Visitors to Rocky Mountain National Park can see the wild animals that live there. These animals include elk (廖鹿), moose (驼鹿), mountain goats, and mountain sheep.
The Rocky Mountains | |
| Location | They stretch from |
| Height | Mount Elbert in Colorado is the |
| The | In summer, it is warm and dry and in winter, it is wet and cold. |
| Rocky Mountain | People enjoy |
Nile(尼罗河) is the world’s longest and most famous river. It runs 6,650 kilometers.
The main branch(分支) of the Nile, the White Nile, starts just above Lake Victoria, the world’s second largest fresh-water lake, in east central Africa. Then it flows to the north. At Sudan’s capital, another great river called the Blue Nile joins the White Nile. Together, they form one very powerful river. Then it goes through Egypt’s famous Nile Valley before reaching the Mediterranean Sea(地中海）.
Ancient Egypt, the first great African civilization(文明) started along the banks of the Nile more than 5,000 years ago.
Without the rich farmland along the banks of Nile, there might be no ancient Egypt civilization. Every year, the Nile flooded its banks. The floodwaters covered the banks with a rich soil. The Nile’s banks were easy to farm and produce crops. Ancient people traded along the river for hundreds of miles.
1. The White Nile is the2. The Blue Nile
3. Then the Nile goes
4. Every year the Nile flooded its banks. The floodwaters
5. Ancient people
The students of Class 1, Grade 7 are going hiking (徒步旅行) on their field trip. Hiking is good for people's health. Many hikers like to hike in the countryside (乡村), forests and mountains (高山). Just walking for fun is the first kind of hiking. Many people like to hike in city parks or just on the sidewalks.
A hike can take a few hours or weeks. People just need clothes and shoes that are good for the weather. At the beginning hikers should start with walks that they can do in one day. As you get stronger, you can go an overnight hikes. Later you can go longer than that. You can make your hike last for several days or weeks.
For safety (安全), hikers should hike with someone. You should always have one or two friends with you. It is also a good idea to carry a map.
Backpacking is another kind of hiking. People carry food, clothes and other things on their backs in a pack. Backpackers can stay many days in the places where there is no food to buy. They carry what they need on their backs.
Now, put on your hiking shoes and take a hike!
1. How many kind of hiking are there in the passage?___________________________________________________
2. What should hikers do for safety?
___________________________________________________
3. Would you like to go hiking? Why or why not?
___________________________________________________
【推荐2】It’s no wonder running is among the world’s most popular sports because it’s free and requires no other things.
A study suggests running just once a week, or for 50 minutes a week. It reduces the risk of sudden death. The researchers from Victoria University found that the advantages don’t seem very nice with longer running. This is good news for those who don’t have much time for exercise. Also, advantages were found for running at any speed between 8 and 13 km/h. The best speed is up to your own most comfortable pace. You should keep away from hard surfaces, wear comfortable shoes and try not to increase time of running all of a sudden.
Beginners can do the following things.
*Start slow and increase the pace, time and weekly times step by step.
*Get dressed in sports clothes.
*If you don’t like running by yourself, consider joining a running group or an organized event such as a park run. Running in a group can increase your patience.
Running for 50 minutes a week may bring most advantages | |
| Reasons for the popularity of running | *Running is free and requires *It reduces the risk of sudden death. |
Ways to get most advantages when running | *Running at any speed between 8 and 13 km/h is OK. *The best speed *You should keep away from hard |
Suggestions for beginners | *Start *Get dressed in sports clothes. *If you don’t like running |
Although summer holidays offer a long time rest from daily life, many people have too much unhealthy diet to get their nutrition (营养)during this time. Nutritionists advised there are some ways to have a nice vacation but in a healthy way.
Stay hydrated (水分)
Nutritionist Nikki Ostrower said staying hydrated is the most important thing to do while on vacation. Besides being thirsty, being dehydrated(脱水)can lead to get weight, if it keeps on for a long time, it will have bad influence on the organs (器官).
Protect your skin and hair
Spending all day in the sun will become dry on your skin and hair, so you’d better drink plenty of water. You should look for other ways to cure weathered (风化的) skin. The heat also causes hair to be more easily harmed.
How to be comfortable on the plane
“Being on a plane for some hours with bad air is a main reason for the common cold,” Ostrower said. He encouraged pilots to take enough vitamin C to make their immune (免疫) system better and to carry necessary oils to clear out the body while travelling.
Less juice
Brockman said people often try to have all kinds of juice by returning home. She said that it just doesn’t work. I think the best way to get healthy is to keep your diet the same as usual.
Try to eat as clean as possible in order to keep your body on track. It is important to have breakfast. Eat breakfast within the first hour of waking up.
Follow these tips, and you will be sure to have a wonderful summer holiday.
How to keep | ||
| Summer holidays can make us relax ourselves but many people eat unhealthy food to get nutrition. | ||
| Ways to have a nice vacation | Stay hydrated | ※Nutritionist told us staying hydrated is very ※If we keep being dehydrated, our organs will be |
| Protect our skin and hair | ※Staying too long in the sun may hurt our skin so we should not only drink enough water but find more ways to | |
| Be comfortable on the plane | ※Pilots should take enough vitamin C to ※It’s necessary for us to | |
| Drink less juice | ※Brockman said it’s ※You’d better eat clean food and have | |
Conclusion | ||
