“Smart building”is a term that is very popular among opinion-formers，but what exactly is it and how carl it be【C1】______ to redu

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问题 “Smart building”is a term that is very popular among opinion-formers，but what exactly is it and how carl it be【C1】______ to reduce energy use?
Some people may think“smart”simply means automated or high-tech or【C2】______；others think it means low environment impact，and then there are others who think it means a combination of these．
Automated buildings have been around since the 1960s and have become more and more complicated over the decades．The technologies used include optimization(最佳化)of heating systems，where are the control system looks at both external and the internal temperature over 24 hours before deciding on switch-on times．Also，lighting turns itself on when it gets dark，while doors open when someone【C3】______．
There is an argument as to whether the building intelligence or the intelligence of the users is of greater importance．Most believe that it is a combination of both．User behavior will adapt but not【C4】______ to the technology．We each have our own requirements for the space around us and will【C5】______ to make it comfortable．
Some people think we need more【C6】______ in intelligent building control systems，because people engage more if they know what is happening and why．Very often there are complex systems that sit in the background．【C7】______，it seems that people change their behavior if they know that behavior is having an【C8】______ on the energy they are using．
If we want to reduce the amount of energy used and hence reduce【C9】______ related carbon emission，a number of factors have to be considered，such as how the building users and their interaction are linked with the【C10】______ concept．As pressure continues to grow for buildings to become more energy efficient，the demand for automation will continue to grow．
【C2】

选项 A、flexible
B、energetic
C、intelligent
D、effective

答案C

解析考查上下文理解。此句是说明“智能建筑”具有自动化、高科技和______等特点，结合第四段第一句话“对于建筑物的智能性重要还是使用者的智力重要有很大的争论”，可知此处所填词汇与intelligence意思相同或相近，故选C。

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“Smart building”is a term that is very popular among opinion-formers，but what exactly is it and how carl it be【C1】______ to redu

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Manyfriendshipssimply_________becauseonepersondemandstoomuchoftheother．