People have been using the wind's energy for a long，long time.More than 5，000 years ago，ancient Egyptians made boats powered by the wjye.aid.In 200 B．C．，people used windmills （風(fēng)車） in China.
Today，we collect the wind's energy with wind turbines （渦輪）.A turbine is similar to a windmill.It is a very tall tower with two or three blades （葉片） at the top.These blades are turned by the wind.The blades turn a generator （發(fā)電機(jī)） located inside the tower，which creates power.
Groups of wind turbines are known as wind farms.Wind farms can be found near farmland，in narrow mountain passes，and even in the ocean，where there are stronger jye.ais.Wind farms create power for nearby homes，schools and other buildings.
In places like the Midwest and along coasts，winds can provide cheap power.Another great advantage （優(yōu)點(diǎn)） of wind power is that it is a clean form of energy.Wind turbines do not burn oil or coal and do not pollute the air.
Wind is not always an ideal source of energy，however.Wind speed changes from time to time，depending on the time of day，weather and location.Wind turbines can be also dangerous for bats and birds.These animals cannot always tell how fast the blades are moving and crash into them.
（1）When did ancient Egyptians make boats powered by the wind？
More than 5，000 years ago.More than 5，000 years ago.
（2）What are the advantages （優(yōu)點(diǎn)） of wind energy？
Cheap and clean.Cheap and clean.
（3）Do you think wind energy should be widely used？Why or why not？
Yes，because it's good for our environment.Yes，because it's good for our environment.
【考點(diǎn)】人與社會(huì)．
【答案】More than 5，000 years ago.；Cheap and clean.；Yes，because it's good for our environment.
【解答】
【點(diǎn)評(píng)】
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發(fā)布：2024/9/2 3:0:9組卷：9引用：2難度：0.6
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Dear Laura，A.For example，you shouldn't put your bread on your plate.
B.I hope to hear from you soon.
C.I'm very comfortable speaking French now.
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E.Another thing is that it is very impolite to say you're full
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Dear Laura，
Thanks for your message.Yes，I'm having a great time on my exchange program in France.I was a bit nervous before I arrived here，but there was no reason to be.My host family is really nice.They go out of their （1）wto make me feel at home.The grandmother has a teenage granddaughter （2）wis really kind.She always talks to me （3）iFrench to help me practice.My French （4）（improve） quickly since I arrived here! （5）TI still make lots of mistakes，it doesn't worry me as it used to.
Learning how （6）（behave） at the dinner table is a hard part for me.As you can imagine，things are really different from the way they are at home.For example，you shouldn't put your bread on your plate.You （7）（suppose） to put it on the table!Besides，you shouldn't eat anything with your hands except bread.Another thing is that it is very （8）（polite） to say you're full.If you don't want anything else，you should just say， "It was delicious." I find it difficult to remember everything，but I'm （9）（gradual） getting used to it.French customs are not so strange to me any （10）m.
I'll write again soon and tell you more about my life here.Hope you are having a good school year.
Yours，
Lin Yue發(fā)布：2025/1/30 8:0:1組卷：18引用：2難度：0.3