题目

跳广场舞已经成为人们健身的一项运动，优美的舞曲声是通过_____传人人耳的。为了不影响周围居民的生活和休息，跳舞时将音箱的音量调小，这是在_____处减弱噪声。 答案：【答案】空气 声源 【解析】优美的舞曲声是由于扬声器纸盆的振动产生的，是通过空气传入人耳的。为了不影响周围居民的生活和休息，跳舞时将音箱的音量调小，这是在声源处减弱噪声。词汇应用根据句子意思, 用括号中所给汉语提示或单词的适当形式填空。(每空一词)1.They are now_________ (准备) food and drink for the party.2.Mike’s ________(邻居) often help her do a lot of housework .3.Ivan lives on the top floor and Mary lives two floors_____ him.(在…上面)4.My parents will have a party for my (十二) birthday.5.I have to look after my _____(生病的) mother.6.The students are all looking forward to (lie) on the beach.7.Some _______ (visit) will come to my school tomorrow.8.Some_______ (west) countries don't like the colour of red.9.An old friend of (she) is coming to see her parents this weekend.10.Mr Williams is an ____________(art). He lives in the capital city of England.