Danh sách hỏi đáp (49 câu):
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Nguyễn Phương Khanh Cách đây 3 năm
15/04/2022 | 1 Trả lời
Theo dõi (0) -
Nguyễn Thị Thanh Cách đây 3 năm
14/04/2022 | 1 Trả lời
Theo dõi (0)1Lưu ý: Các trường hợp cố tình spam câu trả lời hoặc bị báo xấu trên 5 lần sẽ bị khóa tài khoản
Gửi câu trả lời Hủyna na Cách đây 3 năm14/04/2022 | 1 Trả lời
Theo dõi (0)Đan Nguyên Cách đây 3 năm14/04/2022 | 1 Trả lời
Theo dõi (0)ngọc trang Cách đây 3 năm14/04/2022 | 1 Trả lời
Theo dõi (0)thủy tiên Cách đây 3 năm14/04/2022 | 1 Trả lời
Theo dõi (0)Spider man Cách đây 3 năm15/04/2022 | 1 Trả lời
Theo dõi (0)Meo Thi Cách đây 3 năm14/04/2022 | 1 Trả lời
Theo dõi (0)Tay Thu Cách đây 3 năm15/04/2022 | 1 Trả lời
Theo dõi (0)Huong Duong Cách đây 3 nămA. have the leaders of those two countries met
B. the leaders of these two countries have met
C. have the leaders the two countries meet
D. met the leaders of the two countries
12/07/2021 | 1 Trả lời
Theo dõi (0)Bùi Anh Tuấn Cách đây 3 nămA. What would life on earth be like B. How would life on earth be for
C. What will life on earth be like D. How will life on earth be like
12/07/2021 | 1 Trả lời
Theo dõi (0)Lan Anh Cách đây 3 nămA. wildlife B. amusement C. national D. entertainment
12/07/2021 | 1 Trả lời
Theo dõi (0)Khánh An Cách đây 3 nămA. her B. she C. herself D. hers
11/07/2021 | 1 Trả lời
Theo dõi (0)Sam sung Cách đây 3 nămA. pulled up B. pulled down C. pulled off D. pulled through
12/07/2021 | 1 Trả lời
Theo dõi (0)Nguyễn Tiểu Ly Cách đây 3 nămA. I don’t neither B. neither do I C. so do I D. I don’t, too
11/07/2021 | 1 Trả lời
Theo dõi (0)minh dương Cách đây 3 nămA. am going to know/will tell B. will know/tell
C. will know/tell D. am going to know/tell
11/07/2021 | 1 Trả lời
Theo dõi (0)thu hảo Cách đây 3 nămA. far and away B. far from it
C. as far as they go D. few and far between
12/07/2021 | 1 Trả lời
Theo dõi (0)Tuyet Anh Cách đây 3 nămA. leave off B. leave behind C. leave for D. leave out
11/07/2021 | 1 Trả lời
Theo dõi (0)Nguyễn Phương Khanh Cách đây 3 nămA. off B. in C. on D. away
12/07/2021 | 1 Trả lời
Theo dõi (0)Lê Tường Vy Cách đây 3 nămA. worried B. had been worrying
C. have been worrying D. had worried
11/07/2021 | 1 Trả lời
Theo dõi (0)Anh Hà Cách đây 4 năma. on b. in c. for d. of
10/05/2021 | 2 Trả lời
Theo dõi (0)trang lan Cách đây 4 nămSunlight is solar energy. Sunlight is needed for growing plants that you eat to get energy. Sunlight is also used to make clean electricity. Burning fossil fuels to make electricity pollutes our atmosphere and rivers. Fossil fuels are expensive and limited sources of energy. Nuclear fission is used to create enormous amount of heat and electricity. However, nuclear fission forms dangerous radioactive waste.
Sunlight offers many ways to get energy. A window can allow warm sunlight into your room. Solar water-heating systems can use sunlight to warm the water for your home, swimming pool and school. Sunlight also warms the Earth and causes wind. Electricity can be made by wind generators.
Photovoltaic, or PV system use a type of material that converts sunlight into electricity. PV systems can power your air conditioner or a satellite like the International Space Station PV systems are also used to run a calculator, recharge cell phone, or even power lightweight cars.
Sunlight is also changed into electricity by concentrating solar power or CSP systems. CSP systems have mirrors that focus the sunlight. The concentrated sunlight turns water into steam which turns a turbine that is connected to an electric generator. A CSP system usually uses sunlight to make steam. CSP power plants can store large amount of heat. The stored heat is used to make electricity at night. During cloud days, many CSP plants can also bum natural gas to provide the heat that is used to turn water into steam.
Sunlight provides the energy needed to grow plants and make large amount of environmentally friendly heat and electricity. Solar energy can provide power today and for a long time in the future.
1. This article is mainly about ____.
A. Human using sunlight to stay warm
B. The need to develop new technology for solar power system
C. How the energy of sunlight is used
D. How solar energy can provide power for transportation systems
2. In the first paragraph, the word "fossil fuels" in line 2 means ____.
A. fuels formed millions of years from the remains of animals and plants
B. nuclear energy
C. solar power
D. fuel formed from the energy of the wind
3. The drawback of nuclear fission is that ____.
A. it sends out energy in the form of rays that can be harmful
B. it is costly
C. it releases smoke
D. it is time-consuming to be formed
4. To help the readers understand some of the benefits of solar energy, the author ____.
A. provides a list of solar energy projects
B. lists in chronological order the invention of various systems that gather energy of sunlight
C. describes in detail how a PV system works
D. briefly compares and contrasts the differences in using fossil fuels nuclear fission and solar energy in electric power systems
5. Which of the following statements is NOT true?
A. Fossil fuel supplies are unlimited.
B. Solar energy is the energy that comes from the sun.
C. PV systems provide electricity for the International Space Station.
D. A CSP power plant can produce steam even at night.
6. In the third paragraph, the word "convert" is closest in meaning to ____.
A. change form one religion to another B. transform
C. exchange for something equal in value D. converse
7. In the fourth paragraph, the word "which" refers to ____.
A. water B. steam C. sunlight D. solar power
06/05/2021 | 1 Trả lời
Theo dõi (0)Minh Hanh Cách đây 4 nămIn recent years, job markets have become so competitive that choosing the right (1) ____ path has become crucial for many young people. The goal of most young people is a good to find a (2) ____ that offer some decent benefits. The most basic of these is a good (3) ____ but also includes such things as paid holiday leave, health insurance and a pension fund. But often the reality is somewhat different. Many young people are having to work for a low (4) ____ of pay, with no extra payment for (5) ____ and with the threat that they could be (6) ____ redundant at any time. It's no wonder that there is low confidence among many (7) ____ these days.
This had led a growing number of young people to show their personal qualities and start up their own businesses offering a whole range of (8) ____ to people who live in their (9) ____ communities. It requires a lot of (10) ____ and some luck but is can pay off in the end.
1. A. job B. career C. vocation D. occupation
2. A. station B. spot C. position D. location
3. A. salary B. earnings C. return D. compensation
4. A. figure B. charge C. rate D. cost
5. A. functions B. work C. occasions D. overtime
6. A. taken B. forced C. made D. done
7. A. assistants B. employees C. bosses D. labours
8. A. services B. proposals C. suggestions D. projects
9. A. close B. nearby C. local D. residential
10. A. exercise B. strain C. force D. effort
05/05/2021 | 1 Trả lời
Theo dõi (0)Nguyễn Phương Khanh Cách đây 4 nămHemingway developed a very concise writing style. His name is well- known throughout the world.
A. Hemingway, whose name is well- known throughout the world, developed a very concise writing style.
B. Hemingway, whose is name well- known throughout the world, developed a very concise writing style.
C. Hemingway, his name is well- known throughout the world, developed a very concise writing style.
D. Hemingway, who developed a very concise writing style, his name is well- known throughout the world.
31/05/2020 | 2 Trả lời
Theo dõi (0)Thiên Mai Cách đây 6 nămDịch hộ mình bài này nhé! Cám ơn trước. P/s: Không dùng Google Translate nhé
UN Reports See a Lonelier Planet With Fewer Plants, Animals
Earth is losing plants, animals and clean water at a dramatic rate, according to four new U.N. scientific reports that provide the most comprehensive and localized look at the state of biodiversity. Scientists meeting in Colombia issued four regional reports Friday on how well animals and plants are doing in the Americas; Europe and Central Asia; Africa; and the Asia-Pacific area. Their conclusion after three years of study: Nowhere is doing well.
The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem was about more than just critters, said study team chairman Robert Watson. It is about keeping Earth livable for humans, because we rely on biodiversity for food, clean water and public health, the prominent British and U.S. scientist said. "This is undermining well-being across the planet, threatening us long term on food and water," Watson said in an interview. Scientists pointed to this week's death of the last male northern white rhino in Africa and severe declines in the numbers of elephants, tigers and pangolins, but said those are only the most visible and charismatic of species that are in trouble.
What's happening is a side effect of the world getting wealthier and more crowded with people, Watson said. Humans need more food, more clean water, more energy and more land. And the way society has tried to achieve that has cut down on biodiversity, he said. Crucial habitat has been cut apart; alien species have invaded places; chemicals have hurt plants and animals; wetlands and mangroves that clean up pollution are disappearing; and the world's waters are overfished, he said. Man-made climate change is getting worse, and global warming will soon hurt biodiversity as much as all the other problems combined, Watson said.
31/10/2018 | 2 Trả lời
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