Which came first, the chicken or the egg? This is one of life’s ______ questions and people have been debating about it for thousands of years. Now scientists believe they have solved this ______. Researchers from Sheffield and Warwick Universities in England discovered the answer ____. They used a super computer to observe the shell-making process while a new shell was ____. Then they found one protein called OC17 that is ______ for forming eggshell. This is only found inside a chicken’s body, which is proof that the ______ came first. The team was ______ looking at how animals and birds make eggshells but suddenly made their surprising ______. The big question now is where chickens came from. The ______ is from dinosaurs. The research team said eggshells are one of nature’s most ______ creations. Professor John Harding from the team told reporters: “Understanding how chickens make eggshells is fascinating in itself, but it can also be _____ in designing new materials.” Eggshells are very lightweight but incredibly strong. Even the most up-to-date materials _____ by the world’s top engineers cannot produce anything as ______ as an eggshell. Professor Harding added that ______ eggshells could help to cure bone diseases and design materials for the construction industry. “Nature has found wonderful ways that ___ for all kinds of problems in materials science and technology — we can learn a lot from them.” he said.
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小题1:C
小题2:A
小题3:B
小题4:D
小题5:A
小题6:C
小题7:B
小题8:D
小题9:A
小题10:D
小题11:B
小题12:C
小题13:A
小题14:C
小题15:B
题目分析：关于先有鸡还是先有蛋这个问题的争论，在哲学和科学等许多领域都已经持续了千百年。日前，英国科学家宣称已经破解了这个一直困扰着人类的谜题。研究证实先有鸡后有蛋。
小题1:根据for thousands of years可知，先有鸡还是先有蛋，这是一个古老的问题。A最奇怪的；B最好的；C最古老的；D最亲密的。故选C。
小题2:Now scientists believe they have solved this ___科学家认为他们已经解决了这个难题。A难题；B事实；C历史；D观点。故选A。
小题3:discovered the answer ____偶然发现了答案。A故意；B偶然；C毫不犹豫；D在工作。故选B。
小题4:observe the shell-making process while a new shell was ____.观察蛋壳形成过程，A破裂；B改变；C消失；D形成。故选D。
小题5:OC17 that is ______ for forming eggshellOC17是蛋壳形成所必需的。A必需的；B容易的；C友好的；D不可能的。故选A。
小题6:根据This is only found inside a chicken’s body可知，这种蛋白质只能在鸡子体内找到，因此先有鸡。A鸡蛋；B蛋壳；C鸡；D恐龙。故选C。
小题7:but suddenly made their surprising ___研究团队最初是在观察蛋壳是怎样形成的，意外发现了OC17这种物质。A明显地；B起初，原来；C考虑周到地；D惊讶地。故选B。
小题8:科学家们意外发现的这种物质。make a discovery发现，A发明；B错误；C陈述；D发现。故选D。
小题9:The big question now is where chickens came from. The ______ is from dinosaurs与question对应的应该是答案，即answer。A答案；B研究；C道路；D鸡蛋。故选A。
小题10:蛋壳是自然界最令人惊异的发明之一。A普通的；B荒谬的；C滑稽的；D令人惊异的。故选D。
小题11:it can also be ______ in designing new materials蛋壳有助于设计新型材料。A有趣的；B有帮助的；C正常的；D正确的。故选B。
小题12:根据上一句的“designing new materials”可知，design与materials搭配，A购买；B剪切；C设计；D携带。故选C。
小题13:世界顶级设计师也不能设计出像蛋壳那样出色的材料。A出色的；B普通的；C轻的；D小的。故选A。
小题14:______ eggshells could help to cure bone diseases and design materials研究蛋壳能够帮助治愈骨病，设计建筑材料。A找到；B观察；C研究；D制作。故选C。
小题15:自然界蕴含解决各种材料科学和技术方面的问题的奇妙方法。A发生；B工作；C等待；D看。work for为......效力。故选B。