科目:高中英语 来源: 题型:书面表达
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科目:高中英语 来源: 题型:选择题
A. | better | B. | well | C. | good | D. | worse |
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科目:高中英语 来源: 题型:阅读理解
The reason why blue LED lights won the 2014 Nobel Prize in physics is that they are to (81)resultin big changes in lighting. | |
Save and green | (82)Comparedwith other forms of lighting,LEDs are much more efficient because of the different ways they pass electric current. What's more,LED bulbs can be (83)used30 times longer than traditional bulbs. |
Lighting the world | (84)Apart/Asidefrom household applications of LED bulbs,they can also be used as street lights and car headlights. |
Because of their high efficiency,LEDs,especially solar-powered ones,(85)promiseto light areas without access to electricity. | |
Digital displays | Many smart phones,laptops and televisions use LEDs to back-light their LCD (86)screens. |
By using blue LED lasers,blu-ray players are likely to store (87)moredata. | |
People are now exploring more (88)potentialuses of LEDs such as transmitting data. | |
(89)Conclusion | LED lighting will have a positive (90)impact/influence/effecton environmental protection. |
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科目:高中英语 来源: 题型:阅读理解
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科目:高中英语 来源: 题型:选择题
A. | didn't I realize | B. | did I realize | ||
C. | I didn't realize | D. | I realized |
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科目:高中英语 来源: 题型:阅读理解
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