托福听力真题+题目+答案：Electromagnetic Radiation

托福听力真题+题目+答案：Electromagnetic Radiation

托福听力真题题目如下：

1、What is the lecture mainly about

A、Various uses of electricity and magnetism

B、Fields produced in one type of radiation

C、How rainbows are formed

D、How magnetism affects atoms

2、What does the professor say about X-rays, radio waves, and microwaves

A、They are all different forms of electromagnetic radiation.

B、They all have important uses in modern technology.

C、In large amounts, all may be dangerous to human health.

D、They can all be transformed into visible light.

3、Why does the professor prefer to discuss light in terms of electric fields rather than magnetic fields

A、Electric fields are easier to calculate than magnetic fields.

B、Instruments for measuring electric fields are more widely available.

C、The effects of electric fields are more predictable than the effects of magnetic fields.

D、Electric fields interact more strongly with most materials.

。。。。。。余下托福听力真题题目省略！

本篇托福听力真题音频不太清晰，听力原文为概括性总结，请悉知！

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