Scientists have been trying hard to think of better ways to harness solar energy. Here the word harness most likely means( ) .

2021-04-14

答案：

control and use

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It was essential to ____ science and technology, not just for the economy but for environmental protection as well. A: hard B: harvest C: harness D: hardness
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单选题 ( 2.0 分 )<br/>Which of the following statements is true according to the<br/>passage? A: Nuclear power is a safe and reliable energy source. B: solar energy is always available as a source of energy. C: Water and steam energy has been successfully used in some<br/>countries. D: The real solution to energy crisis lies in natural sources of<br/>energy.
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Most plants use the sun’s light to ________ food for themselves. A: manufacture B: harness C: occupy D: migrate
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There are two basic ways of harnessing solar energy: firstly, by converting it directly into _____ energy to heat water; and secondly, by converting it into electricity.
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He _____ on the use of solar energy and advocated using clean energy. A: discussed B: lectured C: quarreled D: argued