Water is broken ________ into hydrogen and oxygen．


  1. A.
    down
  2. B.
    away
  3. C.
    up
  4. D.
    with
A
break down和bread up都有“分開”的意思，但break down常用來(lái)說(shuō)明一種化學(xué)變化；break up多指“把某物或團(tuán)體拆散，使它們分散開”。break away主要表達(dá)“從……分離出去；脫離”，break with表示“與……決裂；和……斷絕關(guān)系”。兩者都不符合題意。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

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.

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 right off the earth. Another idea was that at the equator 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 (6,000km) wide where Columbus crossed it. Even at its narrowest it is about 2,000 miles (3,200km) wide.

Two things make the Atlantic Ocean rather unusual. For so large an ocean it has very 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 4,000 years to dry up. On the average the water is a little more than two miles (3.2km) deep, but in 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(停滯不前) here. Sometimes they were.

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.

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!

Which world is the Old World?

A. Africa               B. Europe                     C. Asia                  D. All of above

What caused people to be unwilling to explore the Atlantic?

A. There are 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.

What is the topic of the fifth paragraph?

A. How deep the water is

B. How to measure the water in the Atlantic Ocean

C. How much water the Ocean holds.

D. How rain affects the Ocean water.

We can learn from the text that ______.

A. the Atlantic is the largest ocean on earth

B. one of the longest mountain ranges lies in the Atlantic

C. the Atlantic has a lot of islands in it

D. sailing on the Atlantic Ocean is always quiet, smooth and safe

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：福建省廈門六中2009-2010學(xué)年度高一下學(xué)期期中考試（英語(yǔ)） 題型：閱讀理解


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.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：福建省2009-2010學(xué)年度高一下學(xué)期期中考試（英語(yǔ)） 題型：閱讀理解

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.

 

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：福建省廈門六中09-10學(xué)年高一下學(xué)期期中考試 題型：閱讀理解

 

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.

 

 

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：福建省期中題 題型：閱讀理解

閱讀理解。
     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.

查看答案和解析>>

同步練習(xí)冊(cè)答案