By the end of the century, if not sooner, the...

By the end of the century, if not sooner, the world’s oceans will be bluer and greener thanks to a warming climate, according to a new study.

At the heart of the phenomenon lie tiny marine microorganisms (海洋微生物) called phytoplankton. Because of the way light reflects off the organisms, these phytoplankton create colourful patterns at the ocean surface. Ocean colour varies from green to blue, depending on the type and concentration of phytoplankton. Climate change will fuel the growth of phytoplankton in some areas, while reducing it in other spots, leading to changes in the ocean’s appearance.

Phytoplankton live at the ocean surface, where they pull carbon dioxide (二氧化碳) into the ocean while giving off oxygen. When these organisms die, they bury carbon in the deep ocean, an important process that helps to regulate the global climate. But phytoplankton are vulnerable to the ocean’s warming trend. Warming changes key characteristics of the ocean and can affect phytoplankton growth, since they need not only sunlight and carbon dioxide to grow, but also nutrients.

Stephanie Dutkiewicz, a scientist in MIT’s Center for Global Change Science, built a climate model that projects changes to the oceans throughout the century. In a world that warms up by 39C, it found that multiple changes to the colour of the oceans would occur. The model projects that currently blue areas with little phytoplankton could become even bluer. But in some waters, such as those of the Arctic, a warming will make conditions riper for phytoplankton, and these areas will tum greener.” Not only are the quantities of phytoplankton in the ocean changing,” she said, “but the type of phytoplankton is changing.”

And why does that matter? Phytoplankton are the base of the food web. If certain kinds begin to disappear from the ocean, Dutkiewicz said, “it will change the type of fish that will be able to survive.” Those kinds of changes could affect the food chain.

Whatever colour changes the ocean experiences in the coming decades will probably be too gradual and unnoticeable, but they could mean significant changes. “It’ll be a while before we can statistically show that the changes are happening because of climate change,” Dutkiewicz said, “ but the change in the colour of the ocean will be one of the early warning signals that we really have changed our planet.”

1.What directly makes the change of the ocean’s appearance?

A.The increase of phytoplankton.

B.The way light reflects off the organisms.

C.The type and concentration of phytoplankton.

D.The decline of phytoplankton.

2.What does the underlined word “project” in Paragraph 4 probably mean?

A.Control. B.Use.

C.Predict. D.Discover.

3.What can we learn from the passage?

A.Phytoplankton are sensitive to the ocean’s warming trend.

B.Phytoplankton absorb carbon dioxide at the bottom of the ocean.

C.Oceans with more phytoplankton may appear bluer

D.Data have been found to show the change in the colour of the ocean

4.What is the main purpose of the passage?

A.To introduce a new method to study phytoplankton.

B.To explain the effect of climate change on oceans.

C.To analyze the consequences of ocean colour changes.

D.To analyze the composition of the ocean food chain.

高一英语阅读选择困难题查看答案及解析

It seemed as if the world was ______.

A. at an end  B. in the end  C. at the end of  D. by the end of

高一英语单项填空中等难度题查看答案及解析

The Atlantic Ocean is one of the oceans that separate the Old World from the New. For centuries it kept the Americans from being discovered by the people of Europe.

It is more than 4,000 miles (6,400 km) wide where Columbus crossed it. Even at its narrowest it is about 2,000 miles (3,200 km) wide. ________1.________ .

Two things make the Atlantic Ocean rather unusual. For so large an ocean it has very few islands. ________2.________.

One of the longest mountain ranges of the world rises from the floor of the Atlantic.   3.________. The tops of a few of the mountains reach up above the sea and make islands. The Azores are the tops of peaks in the mid-Atlantic mountain range.

Ocean currents are sometimes called “rivers in the sea”. One of these “rivers” in the Atlantic is called the Gulf Stream. It is a current（流） of warm water. Another is the Labrador Current --- cold water coming down from the Arctic. ________4.________.

Today the Atlantic is a great highway. It is not, however, always a smooth and safe one. Storms sweep across it and pile up great waves. Icebergs float down from the far north across the paths of ships.

________5. . Columbus sailed for more than two months to cross it. A fast modern steamship can make the trip in less than four days. Airplanes fly from New York to London in only eight hours and from South America to Africa in four!

A We now have such fast ways of traveling that this big ocean seems to have grown smaller

B This narrowest place is between the bulge（鼓起） of South America and the bulge of Africa

C Also, it is the world’s saltiest ocean

D This big Atlantic Ocean is not easy and sometimes dangerous to cross

E This mountain range runs north and south down the middle of the ocean

F Ocean currents affect the climates of the land near which they flow

G The Atlantic furnishes much food for the people on its shores

高一英语其他题中等难度题查看答案及解析

The Atlantic Ocean is one of the oceans that separate the Old World from the New. For centuries it kept the America from being discovered by the people of Europe.

Many wrong ideas about the Atlantic made early sailors unwilling to sail far out into it. One idea was that it reached out to “the edge of the world” . Sailors were afraid that they might sail off the earth. Another idea was that at the equator(赤道) the ocean would be boiling hot.

The Atlantic Ocean is only half as big as the Pacific, but it is still very large. It is more than 4,000 miles (6,000 km) wide where Columbus crossed it. Even at its narrowest it is about 2,00 miles (3,200 km) wide.

Two things make the Atlantic Ocean rather unusual. For so large an ocean it has few islands. Also, it is the world’s saltiest ocean.

There is so much water in the Atlantic that it is hard to imagine how much there is. But suppose no more rain fell into it and no more water was brought to it by rivers, it would take the ocean about more than 4,000 years to dry up. On the average, the water is a little more than two miles (3.2km) deep, but in some places it is much deeper. The deepest spot is near Puerto Rico. This “deep” measures 30,246 feet---almost six miles (9.6km).

One of the longest mountain ranges of the world rises from the floor of the Atlantic. This mountain range runs north and south down the middle of the ocean. The tops of a few of the mountains reach up above the sea and make islands.

Several hundred miles eastward from Florida there is a part of the ocean called the Sargasso Sea. Here the water is quiet, for there is little wind. In the days of sailing vessels(船) the crew were afraid they would be becalmed (can’t move) here. Sometimes they were.

Today the Atlantic is a great highway. It is, however, not always a smooth and safe one. Storms sweep across it and pile up great waves. Icebergs float down from the far North across the paths of ships.

We now have such fast ways of traveling that this big ocean seems to have grown smaller. Columbus sailed for more than two months to cross it. A fast modern steamship can make the trip in less than four days. Airplanes fly from New York to London in only eight hours and from South America to Africa in four!

61. What caused people to be unwilling to explore the Atlantic?

A. There were no ships big enough to get across the Ocean.

B. Sailors were afraid of being lost in the Ocean.

C. The Atlantic Ocean was very unusual because it has few islands and the saltiest water.

D. Many incorrect ideas such as “the edge of the world”, “the equator with boiling hot water” made people think the Ocean was full of danger.

62. What is the main idea of the fifth paragraph?

A. How deep the water is.

B. How to measure the water in the Atlantic.

C. How much water the ocean holds.

D. How rain affects the Ocean water.

63. What does the underlined word “highway” mean?

A. High road      B. Broad way      C. Fast road           D. Main water way

64. Why does the writer think “this big ocean seems to have grown smaller”?

A. The water in the ocean is becoming less.

B. We have more and more advanced traveling tools now

C. The distance between the ocean and us is shorter.

D. The steamship has a higher speed.

高一英语阅读理解简单题查看答案及解析

The Atlantic Ocean is one of the oceans that separate the Old World from the New. For centuries it kept the America from being discovered by the people of Europe.

Many wrong ideas about the Atlantic made early sailors unwilling to sail far out into it. One idea was that it reached out to “the edge of the world” . Sailors were afraid that they might sail off the earth. Another idea was that at the equator(赤道) the ocean would be boiling hot.

The Atlantic Ocean is only half as big as the Pacific, but it is still very large. It is more than 4,000 miles (6,000 km) wide where Columbus crossed it. Even at its narrowest it is about 2,00 miles (3,200 km) wide.

Two things make the Atlantic Ocean rather unusual. For so large an ocean it has few islands. Also, it is the world’s saltiest ocean.

There is so much water in the Atlantic that it is hard to imagine how much there is. But suppose no more rain fell into it and no more water was brought to it by rivers, it would take the ocean about more than 4,000 years to dry up. On the average, the water is a little more than two miles (3.2km) deep, but in some places it is much deeper. The deepest spot is near Puerto Rico. This “deep” measures 30,246 feet---almost six miles (9.6km).

One of the longest mountain ranges of the world rises from the floor of the Atlantic. This mountain range runs north and south down the middle of the ocean. The tops of a few of the mountains reach up above the sea and make islands.

Several hundred miles eastward from Florida there is a part of the ocean called the Sargasso Sea. Here the water is quiet, for there is little wind. In the days of sailing vessels(船) the crew were afraid they would be becalmed (can’t move) here. Sometimes they were.

Today the Atlantic is a great highway. It is, however, not always a smooth and safe one. Storms sweep across it and pile up great waves. Icebergs float down from the far North across the paths of ships.

We now have such fast ways of traveling that this big ocean seems to have grown smaller. Columbus sailed for more than two months to cross it. A fast modern steamship can make the trip in less than four days. Airplanes fly from New York to London in only eight hours and from South America to Africa in four!

1.What caused people to be unwilling to explore the Atlantic?

A. There were no ships big enough to get across the Ocean.

B. Sailors were afraid of being lost in the Ocean.

C. The Atlantic Ocean was very unusual because it has few islands and the saltiest water.

D. Many incorrect ideas such as “the edge of the world”, “the equator with boiling hot water” made people think the Ocean was full of danger.

2.What is the main idea of the fifth paragraph?

A. How deep the water is.

B. How to measure the water in the Atlantic.

C. How much water the ocean holds.

D. How rain affects the Ocean water.

3.What does the underlined word “highway” mean?

A. High road      B. Broad way  C. Fast road   D. Main water way

4.Why does the writer think “this big ocean seems to have grown smaller”?

A. The water in the ocean is becoming less.

B. We have more and more advanced traveling tools now

C. The distance between the ocean and us is shorter.

D. The steamship has a higher speed.

高一英语阅读理解中等难度题查看答案及解析

By the end of the 20th century, TV show producers had begun to turn to the cheapest performers available — their audience. It seemed that anyone who wanted fame could _______ it. And some people wanted it far too much.

Richard and Mayumi Heene, _______ , launched a large balloon 2,000 meters into the air and then called a TV network to say that their six-year-old son, Falcon, was inside it. Planes were re-routed and Denver International Airport was briefly _______ . However, Falcon was later found to have been hiding in the family’s garage the whole time. The “balloon boy” incident turned out to be a hoax (骗局) and the Heenes were _______ of doing it in the hope of landing their own reality TV shows. Instead, they got a fine and a short sentence each — but they were certainly _______ for a while.

So do we want fame? Research suggests that a large number of us do. According to one recent survey, 30 percent of adults regularly daydream about being famous and 40 percent of us expect to _______ some kind of fame in our lifetimes. Perhaps a better question is: should we want to be famous? Do we really want every _______ of our private lives exposed in newspapers and discussed on television? Some people, such as talent show contestant Susan Boyle, seem ill-euipped to deal with this kind of _______, despite their talent. Boyle gained international fame for her extraordinary singing voice after appearing on TV talent show Britain’s Got Talent and her first album became the fastest-selling of all time in the U.K. But the sudden fame didn’t seem easy for her at first, and after the final of the show, Boyle was _______ to a private psychiatric clinic.

Furthermore, people who achieve fame often don’t seem to like it once they have it. A survey of celebrities found that they worry about the press, critics, threatening letters, the lack of privacy, and the __________ on their children. These are hardly worries that __________ people have to deal with. They also, __________, worry about what would happen if they were no longer famous. And there are plenty of people to ask about that. Take, for example, Donato Dalrymple, a fisherman who rescued a boy from the sea and enjoyed the media spotlight for several months afterwards. When it ended, however, he __________ his job as a toilet cleaner. “I know I’m a nobody,” he said when the attention　 had __________.

“When the person has to go back to everyday life, there’s a sense of __________ loss and being cheated out of something,” says Dr. Robert Cancro of the New York University School of Medicine.

1.A.envy B.avoid C.afford D.get

2.A.for example B.on the other hand C.in contrast D.in comparison

3.A.shut down B.searched through C.sent off D.looked into

4.A.charged B.accused C.considered D.warned

5.A.supported B.ashamed C.crazy D.famous

6.A.involve B.increase C.beat D.experience

7.A.arrangement B.aspect C.variety D.zone

8.A.behavior B.crisis C.pressure D.reputation

9.A.accessible B.admitted C.used D.crowded

10.A.weight B.influence C.benefit D.energy

11.A.intelligent B.well-known C.common D.considerate

12.A.accidentally B.fortunately C.ironically D.understandably

13.A.held up B.gave up C.decided on D.returned to

14.A.disappeared B.arisen C.been paid D.grown

15.A.moderation B.achievement C.disappointment D.direction

高一英语完形填空困难题查看答案及解析

At the end of the 16th century, English was only spoken by people from England. They were native speakers. Today, the largest number of people 1. (speak)English may be in China. A lot of Chinese people speak English 2. their foreign language. The English language 3. (change)quite a lot over the last four centuries. Old English sounded more or less like German because it was based on German, but modern English sounds more like French 4. German because England was once ruled by the French. Two people had great effects on the English changes. One was Shakespeare, who enlarged(扩大)the English vocabulary; the other was Noah Webster, who wrote a dictionary 5. gave American English its own identity.

高一英语语法填空中等难度题查看答案及解析

语法填空

At the end of the 16th century, English was only spoken by people from England. They were native speakers. 1.__________ largest number of people speaking English may be in China at present. A lot of Chinese people speak English 2._________ their foreign language and some can even speak English 3.___________ (fluent). The English language 4.___________ (change) quite a lot over time. Old English 5.__________ (speak) at that time sounded like German because it 6.__________ (base) on German, but modern English sounds more like French 7._________ German because England was once ruled by the French. Two people had great effects on English. One was Shakespeare, the person 8.___________ enriched the English vocabulary; the 9._________ was Noah Webster. He wrote a dictionary and finally gave American English 10._________ own identity.

高一英语语法填空中等难度题查看答案及解析

__1__ the end of the 16^th century English was only spoken by people from England. They were the native _2___(speak). Today, __3__ largest number of people speaking English may be in China because a lot of Chinese people learn and speak English __4__ their foreign language.

Old English ___5___(sound) more or less like German for it was based on German, _6___ modern English sounds more like French than German because England once ___7__(rule) by the French.

Two people had great effects __8__ the English changes. One was Shakespeare, __9___ enlarged the English vocabulary and the other was Noah Webster, who wrote a dictionary. The dictionary gave American English ___10___ own identity.

高一英语其他题中等难度题查看答案及解析

By the middle of the 21st century, the vast majority of the world's population will be living in the cities ______ in the country.

A. other than　　 B. more than

C. better than　　 D. rather than

高一英语单项填空中等难度题查看答案及解析