Many gases        in the atmosphere actually        heat energy that escapes from the Earth’s surface back to the earth


  1. A.
    finding; reflecting
  2. B.
    found; reflected
  3. C.
    found; to reflect
  4. D.
    found; reflect
D
考察非謂語(yǔ)動(dòng)詞。過(guò)去分詞做定語(yǔ)表示被動(dòng)的，發(fā)生過(guò)的動(dòng)作。句意：在空氣中許多被發(fā)現(xiàn)的氣體實(shí)際上反映了從地球表面擴(kuò)散又回到地球的熱能。前文動(dòng)詞為gases的定語(yǔ)，發(fā)生過(guò)的用過(guò)去分詞，下文從此為句子謂語(yǔ)。敘述一個(gè)客觀存在的事實(shí)，用一般現(xiàn)在時(shí)態(tài)，gases為復(fù)數(shù)，故動(dòng)詞用原形，選D。
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We experience different forms of the Sun’s energy every day. We can see its light and feel its warmth. The Sun is the major source of evaporation (蒸發(fā)) of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. These green plants then provide food for all organisms (生物) on the Earth.

Much of the energy that comes from the Sun never reaches the Earth’s surface. It is either reflected or absorbed by the gases in the upper atmosphere. Of the energy that reaches the lower atmosphere, 30% is reflected by clouds or the Earth’s surface. The remaining 70% warms the surface of the planet, causes water to evaporate, and provides energy for the water cycle and weather. Only a tiny part, approximately 0.023%, is actually used by green plants to produce food.

Many gases found in the atmosphere actually reflect heat energy escaping from the Earth’s surface back to the Earth. These gases act like the glass of a greenhouse in that they allow energy from the Sun to enter but prevent energy from leaving. They are therefore called greenhouse gases.

When sunlight strikes an object, some of the energy is absorbed and some is reflected. The amount reflected depends on the surface. For example, you’ve probably noticed how bright snow is when sunlight falls on it. Snow reflects most of the energy from the Sun, so it contributes to the low temperatures of winter. Dark-coloured surfaces, such as dark soil or forest, absorb more energy and help warm the surrounding air.

59. According to the passage, the root cause for weather changes on the Earth is ______.

   A. the atmosphere surrounding the Earth                         

B. water from oceans and lakes

   C. energy from the Sun                   

D. greenhouse gases in the sky

60. Only a small part of the Sun’s energy reaches the Earth’s surface because most of it _______________.

   A. absorbed by the clouds in the lower atmosphere

   B. reflected by the gases in the upper atmosphere

   C. lost in the upper and lower atmosphere

   D. used to evaporate water from the oceans and lakes

61. We learn from the passage that _______________.

   A. all living things on the Earth depend on the Sun for their food

   B. a forest looks dark in winter because it absorbs solar energy

   C. only 0.023% of the energy from the Sun is made use of on the Earth

   D. greenhouse gases allow heat energy to escape from the Earth’s surface

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We experience different forms of the Sun’s energy every day. We can see its light  and feel its warmth. The Sun is the major source of evaporation (蒸發(fā)) of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. These green plants then provide food for all organisms (生物) on the Earth.
Much of the energy that comes from the Sun never reaches the Earth’s surface. It is either reflected or absorbed by the gases in the upper atmosphere. Of the energy that reaches the lower atmosphere, 30% is reflected by clouds or the Earth’s surface. The remaining 70% warms the surface of the planet, causes water to evaporate, and provides energy for the water cycle and weather. Only a tiny part, approximately 0.023%, is actually used by green plants to produce food.
Many gases found in the atmosphere actually reflect heat energy escaping from the Earth’s surface back to the Earth. These gases act like the glass of a greenhouse in that they allow energy from the Sun to enter but prevent energy from leaving. They are therefore called greenhouse gases.
When sunlight strikes an object, some of the energy is absorbed and some is reflected. The amount reflected depends on the surface. For example, you’ve probably noticed how bright snow is when sunlight falls on it. Snow reflects most of the energy from the Sun, so it contributes to the low temperatures of winter. Dark-coloured surfaces, such as dark soil or forest, absorb more energy and help warm the surrounding air.
【小題1】According to the passage, the root cause for weather changes on the Earth is ______.

A．the atmosphere surrounding the EarthB．water from oceans and lakes
C．energy from the SunD．greenhouse gases in the sky
【小題2】Only a small part of the Sun’s energy reaches the Earth’s surface because most of it _______________.
A．a(chǎn)bsorbed by the clouds in the lower atmosphere
B．reflected by the gases in the upper atmosphere
C．lost in the upper and lower atmosphere
D．used to evaporate water from the oceans and lakes
【小題3】We learn from the passage that _______________.
A．a(chǎn)ll living things on the Earth depend on the Sun for their food
B．a(chǎn) forest looks dark in winter because it absorbs solar energy
C．only 0.023% of the energy from the Sun is made use of on the Earth
D．greenhouse gases allow heat energy to escape from the Earth’s surface

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B．There is no air on Mars .

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D．Scientists believe there are living things on Mars .

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A．Living Things on Our Earth                 B．The Moon

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We experience different forms of the Sun’s energy every day. We can see its light and feel its warmth. The Sun is the major source of energy for our planet. It causes the evaporation (蒸發(fā)) of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. These green plants then provide food for all organisms(生物) on the Earth.

Much of the energy that comes from the Sun never reaches the Earth’s surface. It is either reflected or absorbed by the gases in the upper atmosphere. Of the energy that reaches the lower atmosphere,30% is reflected by clouds or the Earth’s surface. The remaining 70% warms the surface of the planet, causes water to evaporate, and provides energy for the water cycle and weather. Only a tiny part, approximately 0.023%, is actually used by green plants to produce food.

Many gases found in the atmosphere actually reflect heat energy escaping from the Earth’s surface back to the Earth. These gases act like the glass of a greenhouse in that they allow energy from the Sun to enter but prevent energy from leaving. They are therefore called greenhouse gases.

When sunlight strikes an object, some of the energy is absorbed and some is reflected. The amount reflected depends on the surface. For example, you’ve probably noticed how bright snow is when sunlight falls on it. Snow reflects most of the energy from the Sun, so it contributes to the low temperatures of winter. Dark-coloured surfaces, such as dark soil or forest, absorb more energy and help warm the surrounding air.

1.According to the passage, the root( 根本的) cause for weather changes on the Earth is         .

A．the atmosphere surrounding the Earth

B．water from oceans and lakes

C．energy from the Sun

D．greenhouse gases in the sky

2.Only a small part of the Sun’s energy reaches the Earth’s surface because most of it is         .

A．a(chǎn)bsorbed by the clouds in the lower atmosphere

B．reflected by the gases in the upper atmosphere

C．lost in the upper and lower atmosphere

D．used to evaporate water from the oceans and lakes

3.We learn from the passage that         .

A．a(chǎn)ll living things on the Earth depend on the Sun for their food

B．a(chǎn) forest looks dark in winter because it absorbs solar energy

C．only 0.023% of the energy from the Sun is made use of on the Earth

D．greenhouse gases allow heat energy to escape from the Earth’s surface

 

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