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问题 问答题

假如你的邻居经常引吭高歌，影响你休息和学习，你能想出办法来减弱这种噪声的干扰吗？

答案

答：①向邻居提出问题，并说出他的行为对我的困扰，在声源处减弱噪声；

②拉上窗帘，在传播过程中减弱；

③戴上耳塞，在接收处减弱噪声．

写作题

书面表达。

     请根据下面Linda信中提出的困惑，以读者Mei的名义为她写一封80词左右的回信，帮她解决问题。

Dear Editor,

     I had my ears pierced without asking for permission from my mother, and she is angry with me now.

She can't accept the fact that teenagers get their ears pierced. I think it isn't a big deal for me to do this.

I argued with my mother and we were both unhappy. Can you tell me how to solve this problem?

                                                                                                                            Linda

Dear Linda,

     I read your problem from the Newsletter. In my opinion,___________________________________________________________________________________________________________________________________________________________________________________________________

     Good luck to you!

                                                                                                                                      Mei
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问答题

小张从壶中倒一杯刚烧开的水放在桌子上，杯内的水逐渐变凉．请根据水温变化的实际情况，在图上大致画出0～20min时间内这杯水的温度随时间变化的图象．
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