XB2U1 This illness causes s (十分严重的) diarrhoea. In general, doctors in those days had two c (对立的;矛盾的) theories to explain how cholera spread. The other was that cholera was caused by an i (感染;传染) from germs in food or water. Snow s to (同意;赞同) the second theory. It was correct, but he still needed p (证据;证明). There were m (数量多的) deaths near the water pump. However, some h (一家人;家庭) had had no deaths. Snow s (怀疑) that the water pump was to b (责备). Accordingly, he had the h (把手;拉手) of the pump removed so that it could not be used. Through this i (介入;出面), the disease was stopped in its tracks. Moreover, Snow was later able to show a l (联系) between other cases of cholera and the different water companies in London. Some companies sold water from the River Thames that was polluted by r (未经处理的) waste. The people who drank this water were much more likely to get cholera than those who drank p (纯净的) or boiled water. Through Snow’s tireless efforts, water companies began to sell clean water, and the threat of cholera around the world saw a s (大量的) d (减少). Moreover, in his use of maps and s (数据), Snow t (改变;转变) the way scientists study diseases. Why don’t Snow use a m (显微镜) He used his great influence to change the t (想法) of the scientific community on this issue. It blocks a key p (蛋白质) in the body’s c (细胞) that is to blame for the spread of cold-causing v (病毒). What was the f (发现) that Snow announced But that was what happened at the i (最初的;开始的) stage of our group’s research on developing a vaccine for malaria. This is when you should have calmed down and got down to doing some s (可靠的;坚固的) work. It c (投掷) different s (阴影;影子)of you, A non-Newtonian fluid is strange because you can p (倒出) it alike a liquid, but if you put any pressure on it, it suddenly becomes hard as c (混凝土). He realised that China needed its own powerful air force to protect and d (保卫) the country. As a graduate a (助手), Qian helped conduct important research into rocket propulsion. Under Qian’s l (领导), China developed the Dongfeng missiles. What might have made him such an o (杰出的;优秀的) and creative scientist was his strong interest in other things. Since he came down with a disease which caused him to lose the use of most of his muscles, his world became one of a (抽象的) thought. The biggest champion of the steady state c (概念) was Fred Hoyle. Hawking’s own work on the big bang theory was soon proven by a (天文学家) with telescopes. Besides being b (聪颖的;绝妙的), he was brave. Hawking was willing to admit his f (错误). Qian changed his major because of a s (改变;转换) in personal interest. They must have a v (生动的;鲜明的) imagination and a strong intuition. 答案 severe 2.contradictory 3.infection 4.subscribed 5. proof multiple 7.households 8.suspected blame 9. handle 10.intervention link 12.raw 13.pure 14.substantial decrease. 15. statistics transformed microscope 17. ... ...
~~ 您好，已阅读到文档的结尾了 ~~
