The sun rises above the Artic Ocean (北冰洋). Ac...

The sun rises above the Artic Ocean (北冰洋). Across the frozen sea, a white bear moves slowly.

The bear stops and sways (摇晃) his head from side to side. There is nothing to see but endless ice and red sky. Then his powerful nose senses what his eyes cannot: a beluga whale is nearby.

The bear follows the smell and spots a large hole in the ice where a small white whale is swimming. He silently walks towards the hole, then stops, standing still. The whale does not see the bear, whose white fur makes him appear invisible (看不见的) against the ice.

Finally, the whale swims close to where the bear is waiting. With terrifying speed, the bear comes to life and moves towards the whale. In a moment it is over, and the bear eats his first meal in nearly a week.

Polar bears rule the frozen sea, but their ancestors weren’t always built for ice and snow. The first Arctic bears were brown bears, a species that includes grizzly bears. They came to the icy north over a hundred thousand years ago.

No one knows for sure why these bears traveled to such a cold place. Scientists think they might have wandered north looking for food. Maybe they became trapped by glaciers and couldn’t leave. Whatever the reason, the bears never should have survived.

But they did. They got used to their new environment. Their bodies changed. Their behavior changed, too. Eventually, the bears developed into an entirely new species: the polar bear. You can see some of the characteristics that polar bears developed to survive.

Sadly, these characteristics may now threaten the polar bear’s survival. As sea ice melts due to global warming, polar bears are frequently forced to come ashore (在岸上). They are poor hunters on land, which means they often go a long time between meals. The polar bear, king of the Arctic, is now classified as a threatened species.

Although the future of the polar bear is unknown, the tale of two bears continues. As temperatures rise, grizzly bears have been spotted moving north into polar bear territory (领地). These long-lost cousins, once forced apart by nature, are coming back together again.

1.What can be inferred about the white bear mentioned in the first four paragraphs?

A. It is noisy.　　 B. it is smelly.　　 C. It is starving.　　 D. It has good eyesight.

2.Why are polar bears struggling to survive?

A. They are threatened by other animals.

B. They are losing their hunting ground.

C. They are spending little time on land.

D. They have difficulty reaching the shore.

3.Which of the following can be the best title for the text?

A. The climate change

B. The polar bear’s favorite meal

C. The dark past of the polar bear

D. The mysteries of the Arctic Ocean

高二英语阅读理解中等难度题查看答案及解析

The ocean is always moving：waves break on the surface, sea levels rise and fall with the tides, and currents flow below the surface. Although it looks as if the water in a wave is moving across the surface of the ocean, it is not. The water is actually moving up and down. This is why an object on top of a wave will bob up and down, but not move forward.

When a wave reaches the shore, however, the water does move forward. It surges(前进 )onto the shore. This is because the “bottom” of the wave drags on the sand and the “top” continues on, crashing onto the shore. This crashing water is called the surf. Most waves are caused by wind blowing across the ocean's surface. The size of a wave depends on how fast and how far the wind blows over the surface and on the depth of the wave. Small winds can cause ripples, while strong winds create large hurricane waves.

Along most shorelines. water levels rise and fall twice a day. These changes, called tides. are caused by the gravitational pull of the Sun and the Moon. The ocean surface lifts, or bulges(凸出), in two places: on the side of Earth that faces the Moon and on the side of Earth that faces away from the Moon. Both bulges cause a high tide on nearby shorelines. At the same time that the high tides occur, low tides occur between the two bulges.

Tides are also affected by the pull of the Sun, although the effect of the Sun is not as great as the effect of the Moon. When the Moon and Sun are lined up with Earth, the combined pull is the strongest, causing the highest high tides and the lowest low tides. These very high and very low tides are called spring tides. Weaker tides, called neap tides, happen when the Moon and the Sun are at right angles to Earth. High tides alternate with low tides. Along most shorelines, a high tide or low tide occurs about every six hours.

1.The word “alternate” in the last paragraph means 　　　　　 .

A. appear suddenly

B. bob up and down

C. change or become quickly

D. happen or follow one after another

2.The best title for the passage is　　　　　 .

A. The Moving Ocean　　　　 B. Tides and Waves

C. Ocean and Earth　　　　　 D. Waves and Currents

高二英语听力第三部分中等难度题查看答案及解析

On a hill 600 feet above the surrounding land, we watch the lines of rain move across the scene, the moon rise over the hills, and the stars appear in the sky. The views invite a long look from a comfortable chair in front of the wooden house.

Every window in our wooden house has a view, and the forest and lakes seldom look the same as the hour before. Each look reminds us where we are.

There is space for our three boys to play outside, to shoot arrows, collect tree seeds, build earth houses and climb trees.

Our kids have learned the names of the trees, and with the names have come familiarity and appreciation. As they tell all who show even a passing interest, maple（枫树）makes the best fighting sticks and white pines are the best climbing trees.

The air is clean and fresh. The water from the well has a pleasant taste, and it is perhaps the healthiest water our kids will ever drink. Though they have one glass a day of juice and the rest is water, they never say anything against that.

The seasons change just outside the door. We watch the maples turn every shade of yellow and red in the fall and note the poplars’（杨树）putting out the first green leaves of spring. The rainbow smelt fills the local steam as the ice gradually disappears, and the wood frogs start to sing in pools after being frozen for the winter. A family of birds rules our skies and flies over the lake.

1.What can be learned from Paragraph 2?

2.By mentioning the names of the trees, the author aims to show that ________.

3.What does the underlined sentence in the last paragraph mean?

4.What is the main purpose of the author writing the text?

高二英语阅读理解中等难度题查看答案及解析

On a hill 600 feet above the surrounding land, we watch the lines of rain move across the scene, the moon rise over the hills, and the stars appear in the sky. The views invite a long look from a comfortable chair in front of the wooden house.

Every window in our wooden house has a view, and the forest and lakes seldom look the same as the hour before. Each look reminds us where we are.

There is space for our three boys to play outside, to shoot arrows, collect tree seeds, build earth houses and climb trees.

Our kids have learned the names of the trees, and with the names have come familiarity and appreciation. As they tell all who show even a passing interest, maple (枫树) makes the best fighting sticks and white pines are the best climbing trees.

The air is clean and fresh. The water from the well has a pleasant taste, and it is perhaps the healthiest water our kids will ever drink. Though they have one glass a day of juice and the rest is water, they never say anything against that.

The seasons change just outside the door. We watch the maples turn every shade of yellow and red in the fall and note the poplars’ (杨树) putting out the first green leaves of spring. The rainbow smelt fills the local steam as the ice gradually disappears, and the wood frogs start to sing in pools after being frozen for the winter. A family of birds rules our skies and flies over the lake.

1.What can be learned from Paragraph 2?

A. The scenes are colorful and changeable.

B. There are many windows in the wooden house.

C. The views remind us that we are in a wooden house.

D. The lakes outside the windows are quite different in color.

2.By mentioning the names of the trees, the author aims to show that ___________ .

A. the kids like playing in trees

B. the kids are very familiar with trees

C. the kids have learned much knowledge

D. the kids find trees useful learning tools

3.What does the underlined sentence in the last paragraph mean?

A. The change of seasons is easily felt.

B. The seasons make the scenes change.

C. The weather often changes in the forest.

D. The door is a good position to enjoy changing seasons.

4. What is the main purpose of the author writing the text?

A. To describe the beauty of the scene around the house.

B. To introduce her children’s happy life in the forest.

C. To show that living in the forest is healthful.

D. To share the joy of living in the nature.

高二英语阅读理解中等难度题查看答案及解析

Not so long ago, a sailor sailing across the cold waters of the northern Pacific Ocean might have had every chance of meeting a sea cow. This cow would have measured 10 meters long and weighed between five and 10 tons and it would spend most of its day moving slowly in the seas, eating grass growing underwater. The cow in question was known as Steller’s sea cow, which has now died out.

Today, many people don’t know that such a strange creature once existed, or don’t know its unbelievable story. but many scientists have discovered many fundamental facts about this mystical (神秘的) animal.

Surprisingly, the first recorded sighting of a Steller’s sea cow didn’t happen until 1741. When a sailing expedition (探险) was stuck on an uninhabited island, later named Bering Island. The sailors survived by hunting and eating the enormous sea cow. Like its modern relatives, the sea cow lived in groups. That and its slow moving behavior made it easy to be caught.

Those sailors that escaped from the island spread word of the amount of meat to be found off its shore. As a result, more and more people came to hunt the animals. It is said that one sea cow could feed 33 men for a month.

However, just 27 years after the island and species had been discovered by modern man, the last sea cow was reported killed. This makes the sea cow one of the few truly large mammals known to have been driven extinct in the modern age.

1.What does the underlined phrase “in question” in Para 1 mean?

A.In danger. B.Referred to.

C.In doubt. D.Being questioned.

2.When did the Steller’s sea cow become extinct?

A.In 1717. B.In 1741.

C.In 1768. D.In 1775.

3.Which of the following words can best describe the Steller’s sea cow?

A.Endangered. B.Huge.

C.Strange. D.Mild.

4.What is the text mainly about?

A.An unbelievable story about the Steller’s sea cow.

B.When the Steller’s sea cow became extinct.

C.How the Steller’s sea cow has been driven extinct.

D.The discovery about the Steller’s sea cow dying out.

高二英语阅读理解中等难度题查看答案及解析

Not so long ago, a sailor sailing across the cold waters of the northern Pacific Ocean might have had every chance of being confronted by a sea cow. This cow would have measured 10 meters long, and weighed between five and ten tones. And it would spend most of its day cruising the seas, eating grass growing underwater. The cow in question was known as Steller’s sea cow, which is now extinct.

Today, many people are unaware that such an extraordinary creature once existed, or don’t know its incredible story. But scientists have discovered many fundamental facts about this mystical animal.

Surprisingly, the first recorded sighting of a Steller’s sea cow didn’t happen until 1741, when a sailing expedition was stuck on an uninhabited island, later named Bering Island. The sailor survived by hunting and eating the huge sea cow. Like its modern relatives, the sea cow lived in herds. That and its slow-moving behaviour made it easy to be caught.

Those sailors that escaped Bering Island spread word of the bounty(大量) of meat to be found off its shores. As a result, more and more expeditions came to hunt the animals. One report stated that one sea cow could feed 33 men for a month.

Incredibly, just 27 years after the island and species had been discovered by modern man, the last sea cow was reported killed. That makes the Steller’s sea cow one of the few truly large mammals known to have been driven extinct in the modern age.

1.Which of the following words can be used to describe the Steller’s sea cow?

A. Huge.            B. Fierce.            C. Aggressive.            D. Mild.

2.The underlined word “That” refers to the fact that ________.

A. the sailor escaped Bering Island

B. the sea cow was a kind of social animal

C. more expeditions came to hunt the sea cow

D. one sea cow could feed 33 men for a month

3.In which year did the Steller’s sea cow become extinct?

A. In 1741.            B. In 1768.            C. In 1785.                D. In 1876.

4.What is the main idea of the passage?

A. Why did expeditions hunt the Steller’s sea cow?

B. When did the Steller’s sea cow become extinct?

C. How did the Steller’s sea cow become extinct?

D. What do we know about the Steller’s sea cow?

高二英语阅读理解中等难度题查看答案及解析

Researchers find that1.large amount of African dust can blow all the way across the Atlantic Ocean and fall on North and South Americas.

African dust storms can harm air quality2. the ocean. But new research by scientists from some countries 3. (show) the storms also can do some good. 4.is found that an average of 28 million metric tons of Saharan dust falls in South America’s Amazon River basin each year. Scientists say the dust is an important5.(provide) of fertilizer. “Yes, it’s6.(surprise) because of the huge amount of dust and phosphorous(磷), 7. is a nutrient that plants need8.(grow),” one of them says.

In fact, the phosphorous9.(fall) from the sky is about the same as the amount that rivers carry out each year. The thick rainforest and the desert dust 10.(join) together on one small planet.

高二英语短文填空中等难度题查看答案及解析

­­­­­­ ______ the youth ______ the rising sun, Mao Zedong expressed his great hope for the youth.

A. Comparing; with   B. Compared; to      C. Compared; with D. Comparing; to

高二英语单项填空中等难度题查看答案及解析

The moonlight came in 　　　　 the windows in the roof and lit up my room.

A.above B.across C.over D.through

高二英语单项填空中等难度题查看答案及解析

________ , the sun was rising in the east.

高二英语单项填空中等难度题查看答案及解析