填空题

If the power frequency is weaker than the frequency generated by the Earth, it will not have any influence on us.

【参考答案】

N

<上一题目录下一题>

热门试题

问答题

Dear Peter, You have asked me for my advice concerning whether you should study history or computer science at a university. Here is how I look at it. I know you have been interested in history since schooldays. However, as a practical person and your friend, I would advise you to take up computer science. There are several reasons for this. Firstly, university training is a preparation for your future career. Therefore, when you choose your major, you have to think about its prospect—whether it will ensure your establishment and continuous development in society. Computer science will offer you much wider job opportunities. History, however fascinating it may be, offers far fewer career prospects. Secondly, in the age of science and technology, it is necessary for one to be computer-literate. In fact, the computer is playing an increasingly important role in our lives. If you choose computer science as your major, I am sure you can enjoy far better career prospects than you can with history. Of course, I am not suggesting that you give up your interest in history altogether. You can take it as a hobby, which may enrich your life. In this way, while you study computer science for your future career, you can also find pleasure in your hobby. I hope what I said can be of some help for you to decide. I wish you could make a wise and happy choice. Best wishes, Rebecca

单项选择题

What CAN'T be inferred from the 1st paragraph

A．Scientific experiments in the past three hundred years have produced many valuable items.
B．For three hundred years there have been people holding hostile attitude toward science.
C．For centuries scientific discoveries have been hailed by the human world unanimously.
D．Three hundred years is not long enough to settle back for critical appraisal of the scientific method.

相关试题