331.Today's youth are better informed than their parents were, and, therefore, might be more capable of making a relationship succeed.

　　332.cut short one's lifetime

　　333.sth may be right logically,they are certainly wrong morally.

　　334.arrange sb's time

　　335.handle various unexpected crisis

　　336.Whether or not a part-time job is useful for a student's future depends on the type of job chosen.

　　337.The tuition fees, not to mention the cost of living, are soaring by the day.

　　338.benefit not only A, but also B as well

　　339.Nevertheless, along with convenicnces, it has brought mankind new problems to solve.

　　340.Internet can vastly improve the efficiency of scientific research.