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I had always planned to take a tour of Yosemite, and I finally fulfilled my dream last December．I cannot help but express how much I enjoyed my tour of Yosemite．
As the best-known scenic spot, Yosemite National Park is actually a natural wonder．The park is located in the middle of the Nevada mountain range．It has huge rocks, great waterfalls and fantastic valleys．
I really need to thank my tour guide, Tony．He was very helpful and he told me a lot of interesting facts about the scenic spots we saw．As I couldn't drive, the tour guide was also my driver．He picked me up at 8 o'clock in the morning．He was a professional and experienced tour guide, so he tried everything to make sure that I had an interesting and relaxing tour．As he was driving, he kept on telling me about the wildlife and the unique scenery in this surprising land．
Bridalveil Fall was our first stop．The best time to see it is in summer, but I didn't go there in the hot season, so the waterfall was not as good as it could have been．I still took a photo of myself standing in front of this terrific waterfall before leaving for my next stop．When I first saw El Capitan, the largest standing sandstone structure in the world, I knew why it was called “El Capitan”．The huge structure dwarfed(使矮小)everything around it．Though I was used to seeing skyscrapers, nothing had prepared me for this．
I felt so happy and excited after I came back from Yosemite．I haven't had this feeling for a very long time．Happiness usually comes when we do activities that accomplish something, which is a deep feeling of joy that often lasts a long time．So I decided to go out for a trip constantly to make myself happy and relaxed．
1．What is Yosemite National Park famous for?(No more than 7 words)
2．Why did the author think Tony was a professional and experienced guide?(No more than 11 words)
3．Why was the author shocked when he first saw El Capitan?(No more than 7 words)
4．According to the passage, what made the author so excited?(No more than 7 words)
It is natural that children are curious (好奇的) about the world around them. For example, they want to know how their hearts beat. They want to know why the ocean water tastes salty.
As children grow up, they become curious about different kinds of things. When they are babies, they are interested in the parts of their bodies and in the smiles of their mothers. They become interested in the physical world around them: the plants, the animals, the sky. Later, they become interested in the things that people have made: wheels, bicycles, cars. And when they are adults, their curiosity continues. Sometimes this curiosity leads to a career (生涯、职业) in science.
Scientists spend their lives trying to find out about the world. Those who work with the earth sciences study the earth, the oceans, and the skies. Other scientists who study living things work with the biological sciences. A third group of scientists study the physical sciences, e. g. physics, chemistry .
These scientists have already discovered a lot about our world. For example, they tell us why your heart beats fast when you run. They say that when you are quiet, your heart normally beats sixty-five or seventy-five times a minute. Your heart is a pump (泵) that pumps blood to all parts of the body. The blood carries oxygen and nutrition. When you run, your muscles work very hard and use the nutrition that the blood carries to them. The muscles need oxygen, too . So your brain sends a signal to the heart. The signal means that the muscles need more nutrition and oxygen. Then the heart beats fast and sends blood quickly to the muscles. It may beat 90 to 140 times a minute.
Of course, scientists cannot answer all of our questions. If we ask, “Why does the ocean water taste salty” scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks. Rain falls into cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask , “What happens to the salt in the ocean? The ocean does not get saltier every year.” Scientists are not sure about the answer to this question.
We know a lot about our world, but there are still many answers that we do not have, and we are curious.
According to the passage, which of the following statements is true?
A．People are curious in the same way.
B．People in different countries are interested in different things.
C．Men and women are curious about different things.
D．People of different ages are interested in different things
Scientists who work with the biological sciences study____.
A．the earth , the oceans and the sky B．man-made things
C．plants and animals D．ocean water
When you run, your muscles need ____.
A．more nutrition and oxygen B．more signals
C．more salt D．water
A rock cracks _____.
A．in wet regions B．in dry regions
C．at very high or very low temperatures D．when salty water falls in
People are always curious because ____.
A．they cannot explain many things B．they know nothing about the world
C．they know little about the world D．they want to be scientists
查看习题详情和答案>>It is natural that children are curious about the world around them. For example, they want to know how their hearts beat. They want to know why the ocean water tastes salty.
As children grow up, they become curious about different kinds of things. When they are babies, they are interested in the parts of their bodies and in the smiles of their mothers. They become interested in the physical world around them: the plants, the animals, the sky. Later, they become interested in the things that people have made: wheels, bicycles, cars. And when they are adults, their curiosity continues. Sometimes this curiosity leads to a career (生涯、职业) in science.
Scientists spend their lives trying to find out about the world．Those who work with the earth sciences study the earth, the oceans, and the skies. Other scientists who study living things work with the biological sciences. A third group of scientists study the physical sciences, e. g. physics, chemistry.
These scientists have already discovered a lot about our world．For example, they tell us why your heart beats fast when you run. They say that when you are quiet, your heart normally beats sixty-five or seventy-five times a minute. Your heart is a pump (泵) that pumps blood to all parts of the body. The blood carries oxygen and nutrition. When you run, your muscles work very hard and use the nutrition that the blood carries to them. The muscles need oxygen, too . So your brain sends a signal to the heart. The signal means that the muscles need more nutrition and oxygen. Then the heart beats fast and sends blood quickly to the muscles. It may beat 90 to 140 times a minute.
Of course, scientists cannot answer all of our questions. If we ask, “Why does the ocean water taste salty” scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks. Rain falls into cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask , “What happens to the salt in the ocean? The ocean does not get saltier every year.” Scientists are not sure about the answer to this question.
We know a lot about our world, but there are still many answers that we do not have, and we are curious.
1.According to the passage, which of the following statements is true?
A．People of different ages are interested in different things
B．People in different countries are interested in different things.
C．Men and women are curious about different things.
D．People are curious in the same way.
2.Scientists who work with the biological sciences study____.
A．the earth , the oceans and the sky B．plants and animals
C．man-made things D．ocean water
3.When you run, your muscles need ____.
A．more nutrition and oxygen B．more signals C．more salt D．water
4.A rock cracks _____.
A．in wet regions B．in dry regions
C．at very high or very low temperatures D．when salty water falls in
5.People are always curious because ____.
A．they cannot explain many things B．they know nothing about the world
C．they know little about the world D．they want to be scientists
查看习题详情和答案>>
阅读理解
Yellowstone is the United States' first and most famous national park. This large wilderness area is very high in the Rocky Mountains of the northwestern US. It is bigger than the smallest state in the US.
Yellowstone became the world's first national park in 1872.
Yellowstone has many different kinds of unusual scenery：Although millions of people visit the park, the land remains unchanged－still a wilderness. The valley of the Yellowstone River has beautiful coloured rocks and three large waterfalls. In the early morning or evening, visitors sometimes see large deer－like animals, or buffalo(水牛)eating grass along the shores of Lake Yellowstone. The high mountains around Yellowstone are covered with evergreen forests.
Yellowstone Park has many areas with hot springs. These are caused by heat from the hot centre of the earth. Old Faithful is the most famous. Every 70 minutes, old Faithful sends hot water about 150 feet high into the air.
Here, hot spring water runs down over rocks into deep pools. It looks rather like a wonderful white cake.
When you visit Yellowstone, why not live like a cowboy? You can stay at an Old West country hotel. You'll enjoy typical cowboy food outdoors. You can ride a horse along one of the many paths or tralils.
There are over 1,000 miles of trails around Yellowstone. If you like excitement, take a boat trip down the fast Snake River, or spend a quiet summer day fishing by a river or a blue mountain lake.
In winter, Yellowstone Park is covered with heavy snow, but visitors still come to skate. With clouds of steam above them and snow all around, Yellowstone's hot springs look even more wonderful.
1．Which of the following is not true?
[ ]
A．Yellowstone Park has the longest history in US.
B．Yellowstone has a beautiful scenery.
C．There are forests in the park.
D．There are all kinds of birds in the park.
2．Visitors in the park can see animals eating grass ________.
[ ]
A．wherever they go
B．whenever they go
C．from time to time
D．on the top of the mountains
3．In this passage, the writer advises us to ________.
[ ]
A．become a cowboy
B．spend nights outdoors
C．do something as a cowboy did
D．drive along the paths
4．One of the most exciting activities in the park in summer is ________.
[ ]