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Read the passage and choose the best option to answer each of the following questions.
Wind is a form of solar energy. Winds are caused by the uneven heating of the atmosphere by the sun. Wind flow patterns are changed by the earth’s terrain, bodies of water, and vegetative cover. This wind flow, or motion energy, when “harvested” by modern wind turbines, can be used to generate electricity.
Wind turbines are available in a variety of sizes, and therefore power ratings. The largest machine has blades that span more than the length of a football field, stands 20 building stories high, and produces enough electricity to power 1,400 homes. A small home-sized wind machine has rotors between 8 and 25 feet in diameter and stands upwards of 30 feet and can supply the power needs of an all-electric home or small business, utility scale turbines range in size from 50 to 750 kilowatts. Single small turbines, below 50 kilowatts, are used for homes, telecommunications dishes, or water pumping.
Câu hỏi:What is the reason for the existence of wind?
- A. atmosphere heated unevenly
- B. wind flow
- C. motion energy
- D. wind turbines
Lời giải tham khảo:
Đáp án đúng: A
Kiến thức: Đọc hiểu
Giải thích:
Nguyên nhân tồn tại của gió là gì?
A. khí quyển nóng lên không đều
B. luồng gió
C. năng lượng chuyển động
D. tua-bin gió
Thông tin: Winds are caused by the uneven heating of the atmosphere by the sun.
(Gió được gây ra bởi sự nóng lên không đều của bầu khí quyển bởi mặt trời.)
Chọn A
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CÂU HỎI KHÁC
- A. thousand B. healthy C. weather D. thirsty
- A. crowded B. polluted C. wanted D. caused
- A. noise B. system C. square D. service
- A. January B. crystal C. hungry D. skyscraper
- It’s ________ to fly and more convenient than a helicopter.
- They ________ solar panels on the roof of the house to catch the energy from the sun.
- Mr. Smith is __________ old customer and __________ honest man.
- The narrow streets can’t __________ more traffic during rush hour.
- My face looks like _______face.
- Look at the boy! He is __________ a horse.
- Wind is one type of __________ source of energy.
- The music __________ louder and louder. Many people __________ their hands over their ears.
- Choose the best option: The biggest ___________ for the winner is a trip to France.
- Choose the best option: A lot of people go to the city center to __________ the festival.
- I go to school by bus every day. I don’t like it much, _________.
- Choose the best option: Critics were all __________ at their performance on the stage yesterday.
- Choose the best option: Always look __________ when you cross the street.
- ________ person suffering from ________ shock should not be given anything to drink.
- You can see ________ people in many places in big cities. They have no place to live.
- ______ cat is adorable. ______is adorable, too.
- The boys __________ their homework at the moment. They __________ TV instead.
- Choose the best option: People ________ the festival by throwing water to wish everyone happiness.
- _______ they hold the festival in Ha Noi every year?
- _________ the fact that he is 23 years old, he is so childish.
- Choose the best option: The films was so ________ that we almost fell asleep.
- Choose the best option: The traffic ________ tell people to do, warns people about possible dangers in the street.
- Choose the best option: What is the reason for the existence of wind?
- Choose the best option: Which of the following is NOT mentioned as a factor affecting the wind direction?
- Choose the best option: What is the height of the largest wind turbines?
- A small home-sized wind machine can produce enough power for_________.
- Choose the best option: How much power do single small turbines generate?
- A. question B. invite C. city D. village
- A. reporter B. fantastic C. natural D. delicious
- A. crowded B. wealthy C. problem D. effect
- A. essential B. memorial C. historic D. volunteer
- The increased loss of the_________are highly influenced by overpopulation.
- Excessive agriculture has become more and more_________.
- _________of the entire earth’s surface was originally covered by rainforests.
- Rainforests may cover less than 6% of the earth’s surface in the next_________.
- Acidification and_________have made 30% of the ocean reefs disappear since 1980.
