explore(v.勘探，探测) transmit(v.传送，传递，传播) resource(n.资源) emerge(v.出现，为···所公认) yield(v.产生，出产，屈从，让步) pose(v.摆姿势，导致) assume(v.认为，假定，假设) confidence(n.信任信赖，自信心) inherit(v.沿袭，秉承，继承) comprehensive(a.综合的，多方面的)
1. Given the chance to show his ability, he regained confidence and began to succeed in school.
2. It is so difficult to explore the bottom of the ocean because some parts are very deep.
3. It was about 30 seconds before Alex emerged from the water; we were quite scared.
4. We often assume that when other people do the same things as we do, they do them for the same reasons; but this assumption is not always reasonable.
5. There is widespread concern that the rising unemployment may pose a threat to social stability.
6. After a(n) comprehensive physical exam, my doctor said I was in good condition except that my blood pressure was a little high.
7. It is well known that China is a country with rich natural resources and a very big population.
8. Some people believe that the earth can yield enough food to support at least twice its present population.
9. Sam inherited the gift of imagination from his family, but he lacked the driving power to take action.
10. A bee that has found honey is able to transmit to other bees the information they need in order to collect the honey.
pursue追求，致力于 available可获得的可利用的 qualify使合适，合格
raise提升，增加 passion强烈的爱好，热爱 virtually实际上
classify分类归类 acquire获得，取得，学到 fashionable流行的
especially特别的 sample样品，标本 prosperous繁荣的
University students come from different parts of the country with various purposes. However, a closer look at their reasons for studying at the university will enable us to (1)classify them roughly into three groups: those who have a(n) (2)passion for learning, those who wish to (3)attain a bright future, and those who learn with no definite purpose. Firstly, there are many students who learn simply because they (4)pursue their goal of learning. Some read a wealth of British and American novels because they are keenly interested in literature. Others sit in front of the computer screen, working on a new program, (5)virtually day and night, because they find some computer programs (6)fascinating, and they dream of becoming a "Bill Gates" one day. Secondly, there are students who work hard mainly for a better and more (7)prosperous future. It seems that the majority of students fall into this group. After admission to the university, they read books after books to (8)acquire knowledge from all of the resources which are (9)available to them, and finally, to succeed in the future job market. Thirdly, there are still some students who learn without a clear goal. They take courses, finish homework, enjoy life on campus, but don't want to (10)sample anything new