【单选题】Present estimates suggest that ___ of all eukaryotic proteins have long unstructured regions in their polypeptide chain (greater than 30 amino acids in length), while a substantial number of eukaryoti...
【简答题】What makes people work harder? It seems that those of us who believe that a __________ increase is always the most important __________ factor have got it wrong. Indeed, numerous job __________ survey...
【简答题】For many of us,work is still a place where we go each day.However,the whole concept of a work and leisure is changing,and for an increasing number of people around the world,work is no longer a place ...