Why is the two scientists work so important to science?
In the 1920s,Satyendra Nath Bose was studying an interesting ____about special light particleswe now call photons.Bose had trouble ____ other scientists to believe his theory,so he contacted Albert Einstein.Einsteins calculations helped him theorize that atoms ____behave as Bose thought-but only at very cold temperatures.
Scientists have also discovered that ultra-coldatoms can help them make the worlds atomic clocks even ____accurate.These clocks are so accurate today they would only lose one second ____six million years! Such accuracy will help us travel in space because distance is velocity times time.With the long distances involved in space ____,we need to know time as accurately as possible to get accurate distance.
51.A. operated B. opened C. offered D. occurred
52.A. space B. star C. Earth D. planet
53.A. where B. what C. when D. whether
54.A. sadly B. repeatedly C. Freely D. safely
55.A. energy B. year C. system D. rays
56.A. by B. along C. away D. With
57.A. location B education C status D knowledge
58.A. interesting B. impossible C. reasonable D. necessary
59.A. burnt B. cooled C. blown D. cut
60.A. invention B. experiment C. paper D. theory
61.A. forcing B. begging C. convincing D. ordering
62.A. will B. would C. must D. need
63.A. that B. such C. more D. much
64.A. every B. any C. each D. some
65.A. station B. craft C. age D. travel
答案:DADDC CABBD CBCAD
2016年高考英语二轮专题复习命题预测51
2016高考英语复习课件北师大版必修四《Unit 10 Money》一轮复习课件
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2016高考英语复习课件北师大版必修四《Unit 11 The Media》一轮复习课件
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2016高考英语一轮复习课件人教版必修5《Unit4 Making the news》
2016年高考英语二轮专题复习命题预测32
2016高考英语复习课件外研版必修2《Module 3 Music》一轮复习课件
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2016高考英语一轮复习课件人教版必修5《Unit2 The United Kingdom》
2016高考英语一轮复习课件人教版必修5《Unit3 Life in the future》
2016高考英语一轮复习课件人教版选修6《Unit1 Art》
2016年高考英语二轮专题复习命题预测30
2016年高考英语二轮专题复习命题预测45
2016年高考英语二轮专题复习命题预测36
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2016年高考英语二轮专题复习命题预测29
2016高考英语复习课件牛津译林版必修二《Unit 3 Amazing people》一轮复习课件
2016高考英语复习课件牛津译林版必修二《Unit 2 Wish you were here》一轮复习课件
2016年高考英语二轮专题复习命题预测28
2016年高考英语二轮专题复习命题预测47
2016高考英语复习课件外研版必修2《Module 5 Newspapers and magazines》一轮复习课件
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2016高考英语一轮复习课件人教版选修6《Unit2 Poems》
2016高考英语复习课件北师大版必修四《Unit 12 Culture Shock》一轮复习课件
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