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【单选题】
下列光源不为固体发光光源的是()A.
霓虹灯
B.
卤钨灯
C.
白炽灯
D.
LED灯
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【单选题】阅读材料，回答题。 How can we get rid of garbage? Do we have enough energy sources to meet our future energy needs? These are two important questions that many people are asking today. Some people think that m...
A.
The shortage of energy and air pollution
B.
The shortage of energy and the land to hold garbage
C.
Air pollution and the shortage of fossil fuel
D.
Air pollution and the shortage of land to hold garbage
【简答题】阅读理解。 In our life, we have rarely expressed our gratitude to the one who'd lived those years with us. In fact, we don't have to wait for anniversaries to thank the ones close to us-the ones so easily ...
【简答题】In our life, we have rarely expressed our gratitude to the one who'd lived those years with us．In fact, we don't have to wait for anniversaries to thank the ones close to us —the ones so easily overlo...
【简答题】In our life, we have rarely expressed our gratitude to the one who’d lived those years with us.In fact, we don’t have to wait for anniversaries to thank the ones close to us—the ones so easily overloo...
【单选题】—How about the book you are reading? —Good indeed. It ________many problems we have come across in our study.
A.
says
B.
talks
C.
covers
D.
refers
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