问题 单项选择题

对由于衣物没有放平引起的洗衣机机身振动而产生的噪声,最合理的处理方法是().

A.在声源处减弱:放平衣物

B.在传播过程中减弱:关上门窗

C.在人耳处减弱:塞上耳塞

D.在洗衣机内:加更多的水

答案

参考答案:A

单项选择题
填空题

语法填空

阅读下面短文, 按照句子结构的语法性和上下文连贯的要求, 在空格处填入一个适当的

词或使用括号中词语的正确形式填空.

      We often hear people say, "Never give up."These can be __1__(encourage)words and

words of determination.A person who believes in them will keep trying to reach his goal no

matter how many times he __2__(fail).In my opinion, the quality of determination to

succeed is an important one to have.Therefore, I believe that we should never give up.

     One reason is that if we give up too __3__(easy), we will rarely achieve anything.It is not

unusual for us to fail in our first attempt at something new, __4__ we should not feel

discouraged and should try again.Besides, if we always give up when we fail, we will not be

able to develop new skills.

    Another reason we should never give up is __5__ we can learn from our mistakes only if we

make a new effort.If we do not try again, the lesson we have learned __6__(waste).Finally,

we should never give up because as we work __7__(reach) our goals, we develop

confidence, and this confidence can help us succeed in __8__ areas of our lives.If we never

challenge ourselves, we will begin to doubt our abilities.

     In short, it is important that we do not give up when working __9__ our goals.Whether we

succeed in the end or not, we will learn something, and what we learn will help us to become

more confident people.Furthermore, if we give up, we will have __10__ chance of attaining

our goals, but if we keep trying, there is always a chance that we will succeed one day.