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Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.(A) Alike other forms of energy, natural gas (B) may be used to (C) heat homes, cook food, and even (D) run automobiles. A. Alike B. may be used C. heat D. run
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Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
(A) Alike other forms of energy, natural gas (B) may be used to (C) heat homes, cook food, and even (D) run automobiles.
A. Alike
B. may be used
C. heat
D. run
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. (A) Alike other forms of energy, natural gas (B) may be used to (C) heat homes, cook food, and even (D) run automobiles. A. Alike B. may be used C. heat homes D. run
Đọc tiếp
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
(A) Alike other forms of energy, natural gas (B) may be used to (C) heat homes, cook food, and even (D) run automobiles.
A. Alike
B. may be used
C. heat homes
D. run
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles. A. may be used B. run C. to heat D. Alike
Đọc tiếp
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles.
A. may be used
B. run
C. to heat
D. Alike
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles.
A. Alike
B. may be used
C. heat homes
D. run
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles. A. Alike B. may be used C. heat homes D. run
Đọc tiếp
Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles.
A. Alike
B. may be used
C. heat homes
D. run
Mark the letter A, B, C, or D on your answer sheet to show the underlinedpart that needs correction.Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles. A. may be used B. Alike C. run D. to heat
Đọc tiếp
Mark the letter A, B, C, or D on your answer sheet to show the underlinedpart that needs correction.
Alike other forms of energy, natural gas may be used to heat homes, cook food, and even run automobiles.
A. may be used
B. Alike
C. run
D. to heat
*Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions.
Lots of the world’s oil comes from the Middle East, and Venezuela and the United States also produce oil,
A. world’s oil
B. the
C. and
D. produce oilD. produce oil
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. (A) The coal is (B) the world’s most abundant (C) fossil (D) fuel. A. The coal B. the worlds C. fossil D. fuel
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Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
(A) The coal is (B) the world’s most abundant (C) fossil (D) fuel.
A. The coal
B. the world's
C. fossil
D. fuel
* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30. Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the suns energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of energ...
Đọc tiếp
* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30.
Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of energy. As food, they fuel our bodies and those of most other creatures. In such forms as oil, gas, and coal, they heat our homes, run our factories and power our cars.
Photosynthesis begins when solar energy is absorbed by chemicals called photosynthetic pigments that are contained within an organism. The most common photosynthetic pigment is chlorophyll. The bright green color characteristic of plants is caused by it. Most algae have additional pigments that may mask the green chlorophyll. Because of these pigments, algae may be not only green but brown, red, blue or even black.
In a series of enzyme-controlled reactions, the solar energy captured by chlorophyll and other pigments is used to make simple sugars, with carbon dioxide and water as the raw materials. Carbon dioxide is one of very few carbon- containing molecules not considered to be organic compounds. Photosynthesis then converts carbon from an inorganic to an organic form. This is called carbon fixation. In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose. The glucose is then used to make other organic compounds. In addition, photosynthesis produces oxygen gas. All the oxygen gas on earth, both in the atmosphere we breathe and in the ocean, was produced by photosynthetic organisms. Photosynthesis constantly replenishes the earth's oxygen supply.
Organisms that are capable of photosynthesis can obtain all the energy they need from sunlight and do not need to eat. They are called autotrophs. Plants are the most familiar autotrophs on land. In the ocean, algae and bacteria are the most important autotrophs. Many organisms cannot produce their own food and must obtain energy by eating organic matter. These are called heterotrophs.
(Hooked on TOEFL Reading - LinguaForum
It can be inferred from the passage that the author considers solar energy to be_________.
A. useless to most bacteria and algae
B. a permanent and everlasting source of energy
C. a perfect solution to the energy problem
D. essential for every organism on earth