Elephants on the coast of Thailand are acting...

Elephants on the coast of Thailand are acting strangely. They stamp their feet and signal toward the hills. The sea draws back from the beaches. Fish fall heavily in the mud. Suddenly, a huge wave appears. This is no ordinary wave. It is a tsunami (海啸)!

Tsunami waves are larger and faster than normal surface waves. A tsunami wave can travel as fast as a jet plane and can be as tall as a ten-story building. Imagine dropping a stone into a pond. The water on the surface ripples (起涟漪). A tsunami is like a very powerful ripple. Tsunamis begin when the ocean rises or falls very suddenly. Large amounts of seawater are displaced. This movement causes huge waves.

If a tsunami happens, there must be some kind of force that causes the ocean water to become displaced. Most tsunamis are caused by underwater earthquakes. However, volcanoes, landslides (塌方), large icebergs, and even meteorites (陨石) are able to cause one of these giant waves.

Tsunamis are extremely powerful. Ordinary waves lose power when they break. Tsunami waves can remain powerful for several days. Because tsunami waves are so strong, they can kill people, damage property, and completely ruin an ecosystem in just one hour.

Scientists have no way of predicting when a tsunami will hit. However, if a powerful enough earthquake happens, scientists can send out a warning or a watch. A warning means that a tsunami will very likely hit soon. A watch means that conditions are favorable for a tsunami. When people are informed of a watch or a warning, they have more time to prepare. It is best not to get caught unaware when a tsunami is on the way!

1.Why are elephants acting strangely before the Tsunamis?

A.They dislike the huge wave.

B.They are afraid of the big fish.

C.They can sense something out of the ordinary.

D.They see the ocean drawing back from the beaches.

2.What does the underlined word “displaced” in paragraph 2 mean?

A.Moved out of normal place. B.Pushed by human force.

C.Pulled to great heights. D.Hung down quickly.

3.Why do Tsunamis cause so much destruction?

A.They are not familiar to most people.

B.They are very powerful and long-lasting.

C.They break on the coast, unlike normal waves.

D.They are caused by underwater earthquakes.

4.What is this text mainly about?

A.How to guard against tsunamis. B.Differences between wave types.

C.What to do with tsunami waves. D.Causes and effects of tsunamis.

高一英语阅读理解困难题查看答案及解析

Elephants on the coast of Thailand are acting strange.They stamp their feet and motion toward the hills.The sea draws back from the beaches.Fish fall heavily in the mud.Suddenly,a huge wave appears.This is no ordinary wave.It is tsunami!

Tsunami waves are larger and faster than normal surface waves.A tsunami wave can travel as fast as a jet plane and can be as tall as a ten-story building.Imagine dropping a stone into a pond.The water on the surface ripples（起涟漪）.A tsunami is like a very powerful ripple.Tsunamis begin when the ocean rises or falls very suddenly.Large amounts of seawater are displaced.This movement caused huge waves.

For a tsunami to occur,there must be some kind of force that causes the ocean water to become displaced.Most tsunamis are caused by underwater earthquakes.However,volcanoes ,landslides（塌方）,large icebergs,and even meteorites（陨石）are capable of causing one of these mighty waves.

Tsunamis are extremely powerful.Ordinary waves lose power when they break.Tsunami waves can remain powerful for several days.Because tsunami waves are so strong,they can kill people,damage property,and completely ruin an ecosystem in just one hour.

Scientists have no way of predicting when a tsunami will hit.However,if a powerful enough earthquake occurs, scientists can send out a warning or a watch.A warning means that a tsunami will very likely hit soon.A watch means that conditions are favorable for a tsunami.When people are informed of a watch or a warning,they have more time to prepare.It is best not to get caught unaware when a tsunami is on the way.

1.Elephants are acting strange mostly because they_______.

A. dislike the huge wave

B. are afraid of the big fish

C. can sense something out of the ordinary

D. see the ocean drawing back from the beaches

2.Why do Tsunamis cause so much destruction?

A. They are not familiar to most people.

B. They are very powerful and long-lasting.

C. They break on the coast,unlike normal waves.

D. They are caused by underwater earthquakes.

3.From the text,we can learn that_______.

A. a tsunami travels as fast as normal waves

B. a tsunami is formed by huge normal sea waves

C. a tsunami warning is more serious than a watch

D. a warning and watch both mean a tsunami has formed

4.What is this text mainly about?

A. How to guard against tsunami

B. Differences between waves types

C. What to do with tsunami waves.

D. Causes and effects of tsunami

高一英语阅读理解中等难度题查看答案及解析

The Galapagos Islands are in the Pacific Ocean, off the western coast of South America They are a rocky, lonely spot, but they are also one of the most unusual places in the world.　 One reason is that they are the home of some of the last giant tortoises（乌龟）left on earth.

Weighing hundreds of pounds, these tortoises go slowly around the rocks and sand of the islands.　 Strangely, each of these islands has its own particular kinds of tortoises.　 There are seven different kinds of tortoises on the eight islands, and each kind is slightly different from the other.

Hundreds of years ago, thousands of tortoises were around these islands.　 However, all that changed when people started landing there.　 When people first arrived in 1535, crews would seize as many tortoises as they could. They would roll the tortoises onto their backs when they were brought onto the ships. The tortoises were completely helpless once on their backs, so they could only lie there until used for soups and stews.　 Almost 100,000 tortoises were carried off in this way.

The tortoises faced other problems, too. Soon after the first ships, settlers arrived, bringing pigs, goats, donkeys, dogs and cats. A11 0f these animals ruined life for the tortoises. Donkeys and goats ate all the plants that the tortoises usually fed on, while the pigs, dogs and cats ate thousands of baby tortoises each year. Within a few years, it was hard to find any tortoise eggs-or even any baby tortoises.

Finally, in the 1950s, scientists decided that something must be done. The first part of their plan was to remove as many cats, dogs and other animals as they could from the islands. Next, they tried to make sure that more baby tortoises would be born; This slow, hard work continues today, and, thanks to it, the number of tortoises is now increasing every year. Perhaps these wonderful animals will not disappear after all

1.What can we learn from Paragraph i?

A. The Galapagos Islands are the biggest islands in the Pacific Ocean

B.　 The giant tortoises have all left the Galapagos Islands already.

C. The giant tortoises made the Galapagos Islands unusual places.

D .People have built many homes for the giant tortoises on the islands.

2.What is special about the tortoises according to Paragraph 2?

A. They weigh hundreds of pounds.

B. They move around very slowly.

C. There are different kinds of tortoises.

D. They are larger than the ones in other places.

3.What happened first?

A. Sailors took tortoises aboard the ships.

B. Scientists decided to take measures to protect the tortoises.

C. Pigs, dogs and cats ate many baby tortoises.

D. Settlers brought other as to the islands.

4. What happened soon after people brought animals to the islands?

A. Tortoise eggs were kept in safe containers.

B. The animals ate the tortoises' food and eggs.

C. The tortoises continued to wander freely.

D. The tortoises fought against the other animals.

5. What's the result of the scientists' effort?

A. The tortoises began to disappear gradually.

B. The number of tortoises began to decrease

C. Scientists took away other animals off the islands.

D. There are more and more giant tortoises on the islands.

高一英语阅读理解中等难度题查看答案及解析

.They lived________a small island________the coast of Fujian for five years.

高一英语单项填空简单题查看答案及解析

There are many islands _________ the Chinese coast.

A．of               B．off               C．from             D．on

高一英语单项填空中等难度题查看答案及解析

There are many islands ________ the southeast coast of China.

A. to           B. on           C. in               D. off

高一英语单选选择中等难度题查看答案及解析

There are lots of islands          the coast of Canada, and Shanghai is a famous harbor           the east coast.

A. off, on             B. on, on                   C. on, off                 D. off, off

高一英语单项填空简单题查看答案及解析

Even if trees cannot walk, they are still on the move.

In parts of the Arctic, entire forests are moving northward. Across the Arctic, temperatures are rising faster than anywhere else in the world. As that happens, the tree line that marks where forests stop and the treeless tundra(冻原) starts has been moving northward. Trees growing along the tree line must protect themselves from the cold wind. To do this, plants tend to grow horizontal(水平的) branches low to the ground. The energy it takes for trees to grow this way means they don’t have enough energy to make seeds.

But as Earth’s climate has been warming, trees no longer have to just grow horizontally. Many can instead grow up toward the sky. This takes less energy. This happens especially in places where white spruce(白云杉) grows. White spruce, which is a North American trees, is quite able to produce a lot of seeds, which can move long distances in the wind. When wind-blown seeds end up on the tundra beyond the tree line, they finally sprout(发芽) new trees. This explains how a forest can move. Of course, the process would work only if the tundra were warm enough. But in recent years, the whole planet has been warming.

New trees will provide shelter for some snow. Keeping the sun’s rays from making the white surface disappear. Instead, the trees absorb(吸收) the sun’s heat. This warms the air around. The extra warmth encourages even more trees to produce seeds. That further increases a forest’s ability to expand(扩展). What’s more, more trees will trap more snow, preventing much of it from being blown away. Snow can trap heat in the soil below, which encourages trees to grow. The recent rise of temperatures has helped more trees grow past the tree line. People worry about effects on the animals that depend on frozen conditions for food and shelter.

1.What is the main cause of the trees in the Arctic moving northward?

A. The reducing of northern tundra.

B. The rising temperature.

C. The cold and strong wind.

D. The rich resources in the north.

2.What does the underlined word “this” in Paragraph 2 mean?

A. To produce more seeds.

B. To move northward.

C. To respond to the climate change.

D. To protect themselves from the cold wind.

3. What can be inferred from the last paragraph?

A. New trees can trap the snow, which may make the soil colder.

B. The trapped snow prevents new trees from producing more seeds.

C. New trees can make the air around warmer.

D. New trees can bring more food and shelter to local animals.

高一英语阅读理解中等难度题查看答案及解析

Napoleon Bonaparte died on May 5, 1821, on the island of St. Helena off the coast of Africa. He was 51 years old at the time. When doctors examined Napoleon’s body, they said that the former emperor of France had died from cancer of the stomach. That was the cause of death recorded in the official report. However, other doctors disagreed. One doctor who was present during the examination of the body said that Napoleon died of hepatitis. Other historians and medical experts have suggested that Napoleon died of syphilis, tuberculosis, or perhaps malaria. Now, after careful research, a British chemist thinks that Napoleon might have been poisoned -- not by a person, but by his wallpaper.

Napoleon was sent to the island of St. Helena in 1815 after he lost the battle of Waterloo. He was a prisoner on the island. Although he had servants to attend to him, he had to live in one small building. St. Helena is a very wet island, so the walls of the building were always covered with mold. Napoleon became ill from spending too much time inside his house. Almost constantly he had a fever, chills, and felt sick to his stomach. He often felt pain in his shoulders and in his side. His skin turned yellow. He got frequent headaches, and he would become dizzy and vomit(吐). None of the medicine that the doctors gave Napoleon seemed to help. They were not sure what was the matter. Finally, Napoleon was too weak to leave the house. One night, while he was sleeping, he went into a coma and died.

Many doctors who later reviewed the reports of Napoleon’s illness found that the symptoms(症状) did not show a man who suffered from stomach cancer. It seemed obvious that Napoleon had died from some other cause. In 1961, a Swedish doctor examined some of Napoleon’s hair and found a high level of arsenic, a chemical poison. Was Napoleon murdered? It is doubtful. Arsenic was used in many types of medicine during Napoleon’s time, so he might have taken the arsenic as a cure for his illness. Then, in 1982, Dr. David Jones from England began to look into the mystery and suggested that Napoleon might have breathed in arsenic which was in the air of his house. In the 1700s and 1800s, arsenic was used to make a kind of green paint used on cloth and wallpaper. If the paint was used on a wet wall, the arsenic would go into the air. A person in the room might breathe that air. After studying the wallpaper in the room where Napoleon died, Dr. Jones found high levels of arsenic in the green paint on the walls.

1.Why did Napoleon live on St. Helena?

2.The official report said that Napoleon died of____________.

3.Napoleon suffered from the following symptoms except __________.

A. chills      B. fever      C  dizziness     D. bleeding

4.According to Dr. Jones, how did the arsenic probably get into Napoleon’s body?

5.The passage says that.

高一英语阅读理解简单题查看答案及解析

．Elephants, which are the largest mammals on the earth, have almost no natural enemies ______ human beings.

A. rather than                    B. other than                      C. more than                      D. less than

高一英语单项填空简单题查看答案及解析