When we read English,we must________our pronunciation and intonation.A.noticeB.pay attention toC.take careD.look out
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B解析分析:notice意思是“注意到”;take care意思是“小心”“注意”,如:Take care not to smoke too much.指当心有危害的事情,后面不跟名词作宾语;look out意思是“小心,当心”,如:Look out!There es a bus.也是指当心可能有危害的事情。不跟宾语,Look out.=Be careful.;pay attention to意思是“注意”,如:Pay attention to the blackboard.是指要注意某事情,介词to后面跟名词作宾语。本题意思是“必须注意发音和语调”。