Which of the following gives a general idea of how the noise killing system works? The noise killing system is not yet popular

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问题 Which of the following gives a general idea of how the noise killing system works?
The noise killing system is not yet popular mainly because

选项 A、it is still being tried out
B、drivers still have their doubts
C、it increases the cost of car production
D、carmakers are not sure if it is necessary

答案C

解析从文章最后一段最后一句，But the carmakers haven’t decided if they will carry it into production because it would add several hundred dollars to the cost Of their cars可知，因为费用太高，所以没有打算投入生产。

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公共英语（PETS）

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Which of the following gives a general idea of how the noise killing system works? The noise killing system is not yet popular

公共英语二级笔试

公共英语（PETS）

TodaytherearethreedifferentkindsofNewYorkers:thepeoplewhoactasiftheywerebornhere:thepeoplewhoarehereand

Giventhechoice,youngerprofessionalsaremostinterestedinworkingattechcompanieslikeAppleandgovernmentagencieslike

Gary:Itisgenerallyheldthatonecanpickupaforeignlanguageeasilywhenundertheageofeight.Ifyouimmerseachild

Asisknowntoall,theorganizationandmanagementofwagesandsalariesareverycomplex.Generallyspeaking,theAccountsDep

Howlonghasthemanbeenworkinghere?

ItisreportedthattheUnitedStatesuses______energyasthewholeofEurope.

Crimehashisowncycles,amagazinereportedsomeyearsago.Policerecordsthatwerestudiedforfiveyearsfromover2,400ci

Themostsuitabletitleforthispassageis______.Theyputbothcarsinexactlythesamepositiontheyhadbeenininorderto

--______couldIkeepthesebooks?--Onemonth.

Whentherearesmallkidsaround,itisnecessarytoputbottlesofpillsoutof______.

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