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

It is winter in many parts of the world. For some areas, that means snow. Maybe even lots of snow. If you don’t have to drive in it or remove it, snow can be very beautiful. When snow covers everything around you, the world looks like a “winter wonderland”. That is the name of a very popular song about winter. Richard Smith and Felix Bernard wrote the song back in 1934. There are hundreds of recordings of this happy song.
But winter is not always such a beautiful and happy time. It’s cold outside. You try hard to keep warm. The days are darker and shorter. The sun rarely shines. The leaves on the trees are brown. It isn’t surprising that some people are sad in winter. And some people dream about being somewhere else where it’s warm and pretty—like the state of California. The Mamas and the Papas recorded this famous song “California Dreaming”.
During the 1960s, many other famous rock groups released songs about winter. Here is a poetic song by Simon and Garfunkel called “A Hazy Shade of Winter”. They sing about life and hope and possibilities.
In 1968, the group Blood, Sweat and Tears recorded this gentle, sad song about winter. They sing about a lost love and forgotten memories in “Sometimes in Winter”.
In the early 1990s, Tori Amos wrote and recorded the beautiful song called “Winter”. She enjoyed singing about winter when she was a child.
Finally, on a happier note comes this song written and recorded by Fountains of Wayne in 2003. They sing about a snowstorm in a New England town. Nothing unusual there. But instead of being sad or tense about the snow, they write a song about it.
【小題1】 The underlined sentence “For some areas, that means snow.” probably means 
_____ .

Ever since I was little, my favorite season was winter. I loved to play in the snow and enjoy the hot chocolate.
____36_____, winter never gave me the special gift of snow on my birthday. I would ask my grandmother ____37____ it didn’t snow on my birthday. She would laugh and tell me I asked too many questions. ___38____one day, she promised that she would make it snow on my next birthday.
That year, ____39____ my birthday, my grandmother died.  I was sad but angry because she had promised to make it snow. The day of my sixth birthday, I woke up and ran to the window, hoping to see just one snowflake. But there was no snow. I felt mad at my grandmother. She had broken a promise.
But my sixteenth birthday, I had lost all hope of getting my snow, even though I still wished for ___40____. During my party, I stayed with my friends and family and was truly happy. I ___41___ the best time ever! Then I saw the white snow ____42___down all around. I was so excited that I ran around screaming and laughing. My friends all laughed ____43___me, but I didn’t care.
When I ___44____home, my grandpa said he had a gift for me. I was ___45___ because he had given me a gift. It was a small white box, which looked old. I opened it. There was a crystal snowflake(水晶雪花) with a card that said, “Happy Birthday.”
How could this be? My grandpa said it was my grandmother’s final ___46____ on my “sweet sixteenth”. I cried.
I was ___47_____ that my smiling grandmother angel was and had been watching over me.

Kunming is called  “Spring City”, but it _____ snow in winter.

    A. shall        B. can          C. must          D. might

Ever since I was little, my favorite season was winter. I loved to play in the snow and enjoy the hot chocolate.

____36_____, winter never gave me the special gift of snow on my birthday. I would ask my grandmother ____37____ it didn’t snow on my birthday. She would laugh and tell me I asked too many questions. ___38____one day, she promised that she would make it snow on my next birthday.

That year, ____39____ my birthday, my grandmother died.  I was sad but angry because she had promised to make it snow. The day of my sixth birthday, I woke up and ran to the window, hoping to see just one snowflake. But there was no snow. I felt mad at my grandmother. She had broken a promise.

But my sixteenth birthday, I had lost all hope of getting my snow, even though I still wished for ___40____. During my party, I stayed with my friends and family and was truly happy. I ___41___ the best time ever! Then I saw the white snow ____42___down all around. I was so excited that I ran around screaming and laughing. My friends all laughed ____43___me, but I didn’t care.

When I ___44____home, my grandpa said he had a gift for me. I was ___45___ because he had given me a gift. It was a small white box, which looked old. I opened it. There was a crystal snowflake(水晶雪花) with a card that said, “Happy Birthday.”

How could this be? My grandpa said it was my grandmother’s final ___46____ on my “sweet sixteenth”. I cried.

I was ___47_____ that my smiling grandmother angel was and had been watching over me.

1.                A．Certainly        B．Unfortunately    C．Importantly    D．Luckily

2.                A．when          B．how           C．whether  D．why

3.                A．But            B．Or             C．Then D．So

4.                A．on            B．a(chǎn)fter           C．before   D．in

5.                A．it             B．her            C．him  D．me

6.                A．had            B．was            C．played   D．feared

7.                A．fell            B．to fall          C．fallen D．falling

8.                A．with           B．a(chǎn)t             C．from D．off

9.                A．a(chǎn)rrived at       B．remained       C．got  D．entered

10.               A．excited         B．confused       C．pleased   D．frustrated

11.               A．order          B．mistake         C．wish  D．decision

12.               A．certain         B．a(chǎn)ngry          C．sad   D．a(chǎn)nxious