Plants use sunlight seed. A. make B. to make C. made D. making 查看更多

 

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We all enjoy the beautiful show of colours as leaves change each autumn. But did you ever wonder how and why this happens?
Leaves are nature’s food factories. Plants take water from the ground through their roots and take carbon dioxide (二氧化碳) from the air. Plants use sunlight to turn water and carbon dioxide into glucose (葡萄糖). Glucose is a kind of sugar, which plants use as food for energy and growing.
The way plants turn water and carbon dioxide into sugar is called photosynthesis that means “ putting together with light”. A chemical called chlorophyll helps photosynthesis. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.
During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories.
As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. Small amounts of these colours have been in the leaves all along. We just can’t see them in the summer, because they are covered up by the green chlorophyll.
The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples (楓樹), glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red colour. The brown colour of trees like oaks (橡樹) is made from waste left in the leaves.
It is the mixture of all these things that makes the beautiful colours we enjoy during autumn.
【小題1】The word “chlorophyll” in the third paragraph means _______ in Chinese.

A.葉綠素B.氧氣C.胡蘿卜素D.蛋白質(zhì)
【小題2】The leaves of the trees in autumn turn yellow because of the short of _____.
A.water and carbon dioxide
B.glucose and energy
C.sunlight and water
D.sunlight and carbon dioxide
【小題3】The way that _______________________ is called Photosynthesis .
A.plants change water and carbon dioxide into sugar
B.plants turn water and carbon dioxide into sugar with the help of sunlight
C.plants use glucose as food for energy and growing
D.chlorophyll is a great help
【小題4】Which of the following is NOT true?
A.When autumn and winter come, the days get shorter and shorter.
B.During winter trees rest and live on the food they store during the summer.
C.During winter small amounts of yellow and orange colours are kept in the leaves all the time.
D.Trees begin to stop making food in summer.
【小題5】This passage tells us __________________.
A.a(chǎn)ll the plants can grow well with the strong sunlight
B.there are all kinds of plants on the earth
C.a(chǎn)ll the colours of the leaves aren’t made from chlorophyll
D.maples and oaks have the same reason as other trees for the change of colours

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We all enjoy the beautiful show of colours as leaves change each autumn. But did you ever wonder how and why this happens?

Leaves are nature’s food factories. Plants take water from the ground through their roots and take carbon dioxide (二氧化碳) from the air. Plants use sunlight to turn water and carbon dioxide into glucose (葡萄糖). Glucose is a kind of sugar, which plants use as food for energy and growing.

The way plants turn water and carbon dioxide into sugar is called photosynthesis that means “ putting together with light”. A chemical called chlorophyll helps photosynthesis. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.

During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories.

As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. Small amounts of these colours have been in the leaves all along. We just can’t see them in the summer, because they are covered up by the green chlorophyll.

The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples (楓樹), glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red colour. The brown colour of trees like oaks (橡樹) is made from waste left in the leaves.

It is the mixture of all these things that makes the beautiful colours we enjoy during autumn.

1.The word “chlorophyll” in the third paragraph means _______ in Chinese.

A.葉綠素           B.氧氣             C.胡蘿卜素         D.蛋白質(zhì)

2.The leaves of the trees in autumn turn yellow because of the short of _____.

A.water and carbon dioxide

B.glucose and energy

C.sunlight and water

D.sunlight and carbon dioxide

3.The way that _______________________ is called Photosynthesis .

A.plants change water and carbon dioxide into sugar

B.plants turn water and carbon dioxide into sugar with the help of sunlight

C.plants use glucose as food for energy and growing

D.chlorophyll is a great help

4.Which of the following is NOT true?

A.When autumn and winter come, the days get shorter and shorter.

B.During winter trees rest and live on the food they store during the summer.

C.During winter small amounts of yellow and orange colours are kept in the leaves all the time.

D.Trees begin to stop making food in summer.

5.This passage tells us __________________.

A.a(chǎn)ll the plants can grow well with the strong sunlight

B.there are all kinds of plants on the earth

C.a(chǎn)ll the colours of the leaves aren’t made from chlorophyll

D.maples and oaks have the same reason as other trees for the change of colours

 

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We all enjoy the beautiful show of colours as leaves change each autumn. But did you ever wonder how and why this happens?

Leaves are nature’s food factories. Plants take water from the ground through their roots and take carbon dioxide (二氧化碳) from the air. Plants use sunlight to turn water and carbon dioxide into glucose (葡萄糖). Glucose is a kind of sugar, which plants use as food for energy and growing.

The way plants turn water and carbon dioxide into sugar is called photosynthesis that means “ putting together with light”. A chemical called chlorophyll helps photosynthesis. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.

During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories.

As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. Small amounts of these colours have been in the leaves all along. We just can’t see them in the summer, because they are covered up by the green chlorophyll.

The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples (楓樹), glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red colour. The brown colour of trees like oaks (橡樹) is made from waste left in the leaves.

It is the mixture of all these things that makes the beautiful colours we enjoy during autumn.

(  ) 51. The word “chlorophyll” in the third paragraph means _______ in Chinese.

A. 葉綠素     B. 氧氣    C. 胡蘿卜素   D. 蛋白質(zhì)

(  ) 52. The leaves of the trees in autumn turn yellow because of the short of _____.

A. water and carbon dioxide B. glucose and energy 

C. sunlight and water         D. sunlight and carbon dioxide

(  ) 53. The way that _______________________ is called Photosynthesis .

A. plants change water and carbon dioxide into sugar

B. plants turn water and carbon dioxide into sugar with the help of sunlight

C. plants use glucose as food for energy and growing

D. chlorophyll is a great help

(  ) 54. Which of the following is NOT true?

A.  When autumn and winter come, the days get shorter and shorter.

B.  During winter trees rest and live on the food they store during the summer.

C.  During winter small amounts of yellow and orange colours are kept in the leaves all the time.

D.  Trees begin to stop making food in summer.

(  ) 55. This passage tells us __________________.

A.   all the plants can grow well with the strong sunlight

B.   there are all kinds of plants on the earth

C.   all the colours of the leaves aren’t made from chlorophyll

D.   maples and oaks have the same reason as other trees for the change of colours

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We all enjoy the beautiful show of colours as leaves change each autumn. But did you ever wonder how and why this happens?
Leaves are nature’s food factories. Plants take water from the ground through their roots and take carbon dioxide (二氧化碳) from the air. Plants use sunlight to turn water and carbon dioxide into glucose (葡萄糖). Glucose is a kind of sugar, which plants use as food for energy and growing.
The way plants turn water and carbon dioxide into sugar is called photosynthesis that means “ putting together with light”. A chemical called chlorophyll helps photosynthesis. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.
During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories.
As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. Small amounts of these colours have been in the leaves all along. We just can’t see them in the summer, because they are covered up by the green chlorophyll.
The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples (楓樹), glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red colour. The brown colour of trees like oaks (橡樹) is made from waste left in the leaves.
It is the mixture of all these things that makes the beautiful colours we enjoy during autumn

  1. 1.

    The word “chlorophyll” in the third paragraph means _______ in Chinese

    1. A.
      葉綠素
    2. B.
      氧氣
    3. C.
      胡蘿卜素
    4. D.
      蛋白質(zhì)
  2. 2.

    The leaves of the trees in autumn turn yellow because of the short of _____

    1. A.
      water and carbon dioxide
    2. B.
      glucose and energy
    3. C.
      sunlight and water
    4. D.
      sunlight and carbon dioxide
  3. 3.

    The way that _______________________ is called Photosynthesis

    1. A.
      plants change water and carbon dioxide into sugar
    2. B.
      plants turn water and carbon dioxide into sugar with the help of sunlight
    3. C.
      plants use glucose as food for energy and growing
    4. D.
      chlorophyll is a great help
  4. 4.

    Which of the following is NOT true?

    1. A.
      When autumn and winter come, the days get shorter and shorter
    2. B.
      During winter trees rest and live on the food they store during the summer
    3. C.
      During winter small amounts of yellow and orange colours are kept in the leaves all the time
    4. D.
      Trees begin to stop making food in summer
  5. 5.

    This passage tells us __________________

    1. A.
      all the plants can grow well with the strong sunlight
    2. B.
      there are all kinds of plants on the earth
    3. C.
      all the colours of the leaves aren’t made from chlorophyll
    4. D.
      maples and oaks have the same reason as other trees for the change of colours

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閱讀理解。

         Leaves are nature's food factories. Plants take water from the ground through their roots. They take a gas
called carbon dioxide (CO2) from the air. Plants use sunlight to turn water and CO2 into glucose. Glucose is a
kind of sugar. Plants are glucose as food for energy to grow. The way plants turn water and CO2 into glucose
is called photosynthesis. That means "putting together with light". A chemical called chlorophyll helps make
photosynthesis happen. Chlorophyll is green. It gives plants their green colour.
         As summer ends and autumn comes, the days get shorter and shorter. This is how the trees "know" to
begin getting ready for winter.
         During winter, there is now enough light or water for photosynthesis. The trees will rest, and live on the
food they have stored during the summer. They begin to close their food-making factories. The green
chlorophyll disappears from the leaves. Then, we begin to see yellow and orange colours. A few of these colors
stay in the leaves all the time. We just can't see them in the summer, because they are covered up by the green
chlorophyll.        
          Red and purple colors we see in leaves are made mostly in the autumn. In some trees, like maples (楓樹),
glucose is stored in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this
glucose into red. The brown color of trees like oaks (橡樹) is made from wastes left in the leaves.
1. The word "chlorophyll" in the first paragraph means ____ in Chinese.
A. 葉綠素
B. 氧氣
C. 胡蘿卜素
D. 蛋白質(zhì)
2. Where is carbon dioxide from?
A. Ground.
B. Roots.
C. Sunlight.
D. Air.
3. The way ______ is called photosynthesis.
A. plants get carbon dioxide from the air
B. plants take water from the ground
C. plants turn water and carbon dioxide into glucose
D. plants use glucose as food for energy to grow
4. Red and purple colors in leaves are made mostly in ______.
A. spring
B. autumn
C. summer
D. winter
5. ______ in the leaves changes into red color in autumn.
A. Sunlight
B. Water
C. Glucose
D. Chlorophyll

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