RA 2개 올립니다
9 Jynn
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2018.01.23 11:40
전 빠르지도 않고 목소리가 크지도 않고 인토네이션이 과장되지도 않았습니다
도움보단 희망이 되시란 뜻에서..
PTE Study 26번
A university is not a business. More precisely, a not-for-profit college or university is significantly different than a for-profit business. A university has no owners; it is a public trust. Without owners it has no one to pay dividends to, and no one for whom it must maximize its profits. A business has a single overriding goal: the maximization of return for the owners. A university has a multiplicity of goals: to foster learning, to create knowledge, and to serve its community.
PTE Study 32번
Usually, age is determined by physical characteristics, such as teeth or bones. Great—if you have a body. Researchers have tried unsuccessfully to use blood. But in this study, the scientists used immune cells called T-cells. T-cells recognize invaders through receptors that match molecules on bacteria, viruses, even tumors. The cellular activity that produces these receptors also produces a type of circular DNA molecule as a by-product.