下列有关光现象的说法中正确的是

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下列有关光现象的说法中正确的是

A：在太阳光照射下，水面上油膜出现彩色花纹是光的色散现象

B：在光的双缝干涉实验中，若仅将入射光由绿光改为黄光，则条纹间距变窄

C：光导纤维丝内芯材料的折射率比外套材料的折射率大

D：光的偏振现象说明光是一种纵波

上一题下一题 0.0难度选择题更新时间:2019-06-30 11:12:37

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C

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King's College Summer School is anannual(每年的) training program for high school students at all levels who want to improvetheir English. Courses are given by the teachers of King's College and other colleges in New York. Trips to museums and culture centres are also organized.This year's summer school will be from July 25 to August 15. More informationis as follows:

Application date

●Students in New York should send their

applications before July 18, 2016.

●Students of other cities should send their

applications before July 16, 2016.

●Foreign students should send their

applications before July 10, 2016.

Courses

●English Language

Spoken English: 22 hours

Reading and Writing: 10 hours

●American History: 16 hours

●American Culture: 16 hours

Steps

●A letter of self-introduction

●A letter of recommendation

The letters should be written in English with all the necessary information.

Cost

●Daily lessons: $200

●Sports and activities: $100

●Travel: $200

●Hotel service: $400

You may choose to live with your friends or relatives in the same city.

Please write to: Thompson, Sanders 1026 King's Street, New York, USA

E-mail: KC-SummerSchool@yahoo.com

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