单词:angular diameter-red-shift test
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1. What was the main focus of the survey? A. leisure sporting activities B. average age of athletes C. durability of sporting equipment 2. Which group seems to be most active in sports? A. 18-26 B. 27-35 C. 36-45 3. Which sport was cited as the third
And lastly, here's Destin, from Smarter Every Day, 最后是《每天聪明一点点》的德斯丁, talking about the conservation of angular momentum, and, since it's YouTube, cats: 为我们讲述动量守恒,由于是在YouTube上,所以他用
As the Kenyan Red Cross moves to meet a condom shortage in Kenya, the group is seeing positive changes in attitudes towards sexual health. On Friday, the Kenya Red Cross delivered an emergency shipment of male and female condoms to the people of Mash
Itsremarkable how we are able to build up this picture of whats going on millionsof miles away in the solar system. Its one of the joys of science really, justalmost like a detective picking up on those tiny clues to tell a bigger story. Sothat the b
LONDON Whats being billed as the future of skin care starts suspiciously like a visit to the dentist: with a mouthwash gargle. Thats to eliminate debris that may interfere with a good saliva sample, from which DNA will be extracted and serums tailore
LONDON, May 9 (Xinhua) -- LOCOG president Seb Coe hailed the London Prepares series a success as the final London 2012 test event - the London Disability Athletics Challenge - concluded, signalling the end of 42 events. In less than 12 months, LOCOG