题目内容

黑白照片记录的是光的波长。()

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需要戴眼镜的三维电影其实是光的偏正，并不是全息电影。()

For this part, you are allowed 30 minutes to write a composition on the topic Should universities allow students to have more optional courses？ in three paragraphs according to the outline given in English below. You should write at least 120 words.
1．Current situations in the universities on compulsory courses and optional courses.
2．Reasons of having more optional courses.
3．Your answer to the question.

照相机表明的增透膜是利用光的干涉原理制成的。()

按照波动说，白光是由不同颜色的光叠加在一起的。()