题目内容

Wood is wood?

Yes, but it’s not that simple. Each tree species (神类) grows in a certain way, and that affects (影响) the way its wood looks and performs. Foresters divide trees into two kinds: hardwood and softwood species.

Hardwood trees such as oaks (橡树) and maples (枫树 ) have wood with very short fibers. Paper made from these species is weaker than that made from softwood, but its surface is smoother, and therefore better to write and print on.

Softwood trees such as pines and spruces have wood with long fibers, and paper made from this type of woods is much stronger. This kind of paper is ideal for making products like shipping containers that require great strength. But the surface is rougher, and that’s not as good for writing, printing and many other uses.

Happily we can blend fibers from hardwood and softwood into a single paper, getting just the combination of strength, whiteness, writing surface and other characteristics that we want.

And that’s just what we do! Most of the paper you see today is made from both hardwoods and softwoods, a special blend for each purpose.

We make newsprint(新闻纸)to be opaque(不透明) —so you only see the newspaper's comics (连环画), not the stock market report on the other side!

We make grocery bag paper strong, tissue (纸巾) soft, fine writing paper smooth. Even within the same sort, there’s quite a range. Among printing papers, for example, compare the thin sheets of a Bible to the thick, tough pages of a kid’s picture book.

1. Which of the following are trees?

    A. Pines, oaks, fibers and maples.

    B. hardwood, oaks and maples.

    C. Pines and softwood

    D. Maples and oaks.

2. Which of the following is TRUE?

    A. Paper made from spruces is good to write on.

    B. Paper made from oaks is weaker, with smoother surface.

    C. Shopping bags are usually made of the paper from softwood trees, with short fibers.

    D. It is easy for us to make paper from both kinds of trees.

3. The underlined word “blend” perhaps means________.

    A. change         B. separate     C. mix          D. divide

4. The sentence “We make newsprint to be opaque” means_________.

    A. We make newsprint hard to see through.

    B. We make newsprint different from other printing papers.

    C. We make newspaper the way easy to understand.

    D. We make newsprint easy to read.

5. What haven’t we learned from the passage?

    A. Writing paper, as well as printing paper, is divided into many kinds.

    B. We can get a kind of paper made from both hardwood and softwood.

    C. According to the wood, we can divide trees into two kinds.

D. Today we use paper in many ways.

 

答案:DBCAA
提示:

1. Hardwood trees such as oaks (橡树) and maples (枫树 ) have wood with very short fibers.所以选择D。

2. 参见文章第二段。

3. blend的意思是混合。

4. so you only see the newspaper's comics (连环画), not the stock market report on the other side!所以选择A。

5. 文章没有提到的是A。

 


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阅读下面短文,从每题所给的四个选项中选出最佳答案.

  If you can find a tree which has been cut down, you will see many rings, or circles, on the base of the trunk(树干基部). By learning to read these rings you can find out the tree's life.

  The number of rings tells you how old the tree is. Each year, new wood is formed on the outside of the tree. This new wood is light in colour when the tree is growing in spring and summer, and dark in winter when the tree is not growing much. So, if you count the rings in dark-or-light-coloured wood, you can often find out how old the tree is.

  You can also tell which years have been good years and which years have been bad years. When the light-coloured rings are very wide, it means that the tree has been growing quickly that year. If the light rings are narrow, it has been growing slowly. If the rings on a tree trunk were greatly magnified(放大), you would be able to see why the rings are light-coloured when the tree is growing quickly, and dark-coloured when the tree is growing slowly. The tree trunk is made up microscopic tubes(毛细管), like long pipes, carrying water from the soil, through the trunk, and up to the leaves. They are wide and thin-walled when the tree is growing quickly and they are carrying a lot of water. They are narrow and stuck together when the tree is not growing so quickly.

  When a tree is old, the tubes in the centre of the tree don't carry water. The walls of the tubes have become thick with materials which have stuck along them over the years, forming a kind of wood called “heartwood”. This kind of wood is darker in colour than the young, growing wood on the outside of the tree.

  You don't very often see whole tree trucks which have been cut across. But once you learn to read a cross section(横断面)of the wood, you can see much more in wood which had been used to make boxes, houses, and other things.

  In most wood, instead of seeing the trunk cut across, you are seeing it cut along its length. Because you don't see the whole tree, you can't tell how old it was.

(1)The writer says you can tell the age of a tree by ________.

[  ]

A. the number of rings in its trunk

B. the size of the base of its trunk

C. the colour of its rings

D. the rings on the outside of the tree

(2)When the wood of a tree is mostly light in colour this means that the tree ______.

[  ]

A. grew slowly

B. grew quickly

C. only grew in winter

D. only grew in summer

(2)Heart wood is wood which is ________.

[  ]

A. old and darker in colour

B. fast-growing

C. younger and lighter in colour

D. slow-growing

(3)If all the rings in the cross section of a tree trunk are wide and about the same width, then we can tell that the tree ________.

[  ]

A. grew quickly all its life

B. grew slowly all its life

C. grew quickly when it was young and more slowly later.

D. grew slowly when it was young and more quickly later

(4)In a certain country, it is usually dry and rains heavily every third year. Which drawing given below shows a tree trunk from this country?

[  ]

A. grew quickly all its life

B. grew slowly all its life

C. grew quickly when it was young and more slowly later

D. grew slowly when it was young and more quickly later

(5)In a certain country, it is usually dry and rains heavily every third year. Which drawing given below shows a tree trunk from this country?

[  ]

阅读理解

  Wood is wood?

  Yes, but it's not that simple. Each tree species (种类) grows in a certain way, and that affects (影响) the way its wood looks and performs. Foresters divide trees into two kinds: hardwood and softwood species.

  Hardwood trees such as oaks (橡树) and maples (枫树) have wood with very short fibers. Paper made from these species is weaker than that made from softwoods, but its surface is smoother, and therefore better to write and print on.

  Softwood trees such as pines and spruces have wood with long fibers, and paper made from this type of wood is much stronger. This kind of paper is ideal for making products like shipping containers that require great strength. But the surface is rougher, and that's not as good for writing, printing and many other uses.

  Happily, we can blend fibers from hardwoods and softwoods into a single paper, getting just the combination of strength, whiteness, writing surface and other characteristics that we want.

  And that's just what we do! Most of the paper you see today is made from both hardwoods and softwoods, a special blend for each purpose.

  We make newsprint (新闻纸) to be opaque (不透明的) so you only see the newspaper's comics (连环画), not the stock market report on the other side!

  We make grocery bag paper strong, tissue (纸巾) soft, fine writing paper smooth. Even within the same sort, there's quite a range. Among printing papers, for example, compare the thin sheets of a Bible to the thick, tough pages of a kid's picture book.

1.Which of the following are trees?

[  ]

A.Pines, oaks, fibers and maples.

B.Hardwoods, oaks and maples.

C.Pines and softwoods.

D.Maples and oaks.

2.Which of the following is TRUE?

[  ]

A.Paper made from spruces is good to write on.

B.Paper made from oaks is weaker, with smoother surface.

C.Shopping bags are usually made of the paper from softwood trees, with short fibers.

D.It is easy for us to make paper from both kinds of trees.

3.The underlined word “blend” perhaps means “________”.

[  ]

A.change
B.separate
C.mix
D.divide

4.The sentence “We make newsprint to be opaque.” means“________”

[  ]

A.We make newsprint hard to see through.

B.We make newsprint different from other printing papers.

C.We make newspaper the way easy to understand.

D.We make newsprint easy to read.

5.What haven't we learned from the passage?

[  ]

A.Writing paper, as well as printing paper, is divided into many kinds.

B.We can get a kind of paper made from both hardwoods and softwoods.

C.According to the wood, we can divide trees into two kinds.

D.Today we use paper in many ways.

Wood is wood?

Yes, but it’s not that simple. Each tree species (神类) grows in a certain way, and that affects (影响) the way its wood looks and performs. Foresters divide trees into two kinds: hardwood and softwood species.

Hardwood trees such as oaks (橡树) and maples (枫树 ) have wood with very short fibers. Paper made from these species is weaker than that made from softwood, but its surface is smoother, and therefore better to write and print on.

Softwood trees such as pines and spruces have wood with long fibers, and paper made from this type of woods is much stronger. This kind of paper is ideal for making products like shipping containers that require great strength. But the surface is rougher, and that’s not as good for writing, printing and many other uses.

Happily we can blend fibers from hardwood and softwood into a single paper, getting just the combination of strength, whiteness, writing surface and other characteristics that we want.

And that’s just what we do! Most of the paper you see today is made from both hardwoods and softwoods, a special blend for each purpose.

We make newsprint(新闻纸)to be opaque(不透明) —so you only see the newspaper's comics (连环画), not the stock market report on the other side!

We make grocery bag paper strong, tissue (纸巾) soft, fine writing paper smooth. Even within the same sort, there’s quite a range. Among printing papers, for example, compare the thin sheets of a Bible to the thick, tough pages of a kid’s picture book.

1. Which of the following are trees?

    A. Pines, oaks, fibers and maples.

    B. hardwood, oaks and maples.

    C. Pines and softwood

    D. Maples and oaks.

2. Which of the following is TRUE?

    A. Paper made from spruces is good to write on.

    B. Paper made from oaks is weaker, with smoother surface.

    C. Shopping bags are usually made of the paper from softwood trees, with short fibers.

    D. It is easy for us to make paper from both kinds of trees.

3. The underlined word “blend” perhaps means________.

    A. change         B. separate     C. mix          D. divide

4. The sentence “We make newsprint to be opaque” means_________.

    A. We make newsprint hard to see through.

    B. We make newsprint different from other printing papers.

    C. We make newspaper the way easy to understand.

    D. We make newsprint easy to read.

5. What haven’t we learned from the passage?

    A. Writing paper, as well as printing paper, is divided into many kinds.

    B. We can get a kind of paper made from both hardwood and softwood.

    C. According to the wood, we can divide trees into two kinds.

D. Today we use paper in many ways.

 

阅读下面短文,从每题所给的四个选项中选出最佳答案.

  If you can find a tree which has been cut down, you will see many rings, or circles, on the base of the trunk(树干基部). By learning to read these rings you can find out the tree's life.

  The number of rings tells you how old the tree is. Each year, new wood is formed on the outside of the tree. This new wood is light in colour when the tree is growing in spring and summer, and dark in winter when the tree is not growing much. So, if you count the rings in dark-or-light-coloured wood, you can often find out how old the tree is.

  You can also tell which years have been good years and which years have been bad years. When the light-coloured rings are very wide, it means that the tree has been growing quickly that year. If the light rings are narrow, it has been growing slowly. If the rings on a tree trunk were greatly magnified(放大), you would be able to see why the rings are light-coloured when the tree is growing quickly, and dark-coloured when the tree is growing slowly. The tree trunk is made up microscopic tubes(毛细管), like long pipes, carrying water from the soil, through the trunk, and up to the leaves. They are wide and thin-walled when the tree is growing quickly and they are carrying a lot of water. They are narrow and stuck together when the tree is not growing so quickly.

  When a tree is old, the tubes in the centre of the tree don't carry water. The walls of the tubes have become thick with materials which have stuck along them over the years, forming a kind of wood called “heartwood”. This kind of wood is darker in colour than the young, growing wood on the outside of the tree.

  You don't very often see whole tree trucks which have been cut across. But once you learn to read a cross section(横断面)of the wood, you can see much more in wood which had been used to make boxes, houses, and other things.

  In most wood, instead of seeing the trunk cut across, you are seeing it cut along its length. Because you don't see the whole tree, you can't tell how old it was.

(1)The writer says you can tell the age of a tree by ________.

[  ]

A. the number of rings in its trunk

B. the size of the base of its trunk

C. the colour of its rings

D. the rings on the outside of the tree

(2)When the wood of a tree is mostly light in colour this means that the tree ______.

[  ]

A. grew slowly

B. grew quickly

C. only grew in winter

D. only grew in summer

(2)Heart wood is wood which is ________.

[  ]

A. old and darker in colour

B. fast-growing

C. younger and lighter in colour

D. slow-growing

(3)If all the rings in the cross section of a tree trunk are wide and about the same width, then we can tell that the tree ________.

[  ]

A. grew quickly all its life

B. grew slowly all its life

C. grew quickly when it was young and more slowly later.

D. grew slowly when it was young and more quickly later

(4)In a certain country, it is usually dry and rains heavily every third year. Which drawing given below shows a tree trunk from this country?

[  ]

A. grew quickly all its life

B. grew slowly all its life

C. grew quickly when it was young and more slowly later

D. grew slowly when it was young and more quickly later

(5)In a certain country, it is usually dry and rains heavily every third year. Which drawing given below shows a tree trunk from this country?

[  ]

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