Britain takes completely the opposite view. We think the growth of China is a huge(1) _______for the Chinese people, for the world(2)_______ ,and for the British people, too, if we trade more with China, invest more in China, welcome Chinese(3)_________, students and companies into our country. I've been having a meeting with Jack Ma of the Alibaba.I want more British businesses, and luxurious brands to be(4) ______ on their websites,so that as Chinese people become wealthier they can buy the British goods, the British(5)_______. They can enjoy British television programs, British movies. And it is worth remembering that China has brought more people out of(6)______ more quickly than any other country in the world. So this model of growth, of a market growth is the right one to lift people out of poverty.
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3.Passage :Getting around the worldListen to the passage again and then complete the following sentences[音频][音频]1. Bowing is the traditional______________ in some Asian countries like Korea and Japan .2. When ______ friends meet in Russia , both men and women hug each other.3. Shaking hands is common in many countries. But it isn’t _____ done the same way.4. In many ______ , people also shake hands. But they do it differently from the way they do in the U.S. and Canada.5. Many people in Mexico and in Egypt ______. And their handshakes usually _______ a little longer but are softer.
把双缝干涉实验装置放在折射率为n的水中,两缝间距离为d,双缝到屏的距离为D (D >>d),所用单色光在真空中的波长为λ,则屏上干涉条纹中相邻的明纹之间的距离是
A. 2nλD/d
B. nλd/D
C. nDd/λ
D. λD/(nd)
双缝干涉实验中,为使屏上的干涉条纹间距变小,可以采取下面哪种办法
A. 使屏远离双缝
B. 使两缝的间距变小
C. 把两个缝的宽度稍微调宽
D. 改用波长较小的单色光源
用白光光源进行双缝实验,若用一个纯红色的滤光片遮盖一条缝,用一个纯蓝色的滤光片遮盖另一条缝,则
A. 干涉条纹的颜色将发生改变
B. 产生红光和蓝光的两套干涉条纹
C. 干涉条纹的亮度将发生改变
D. 不产生干涉条纹