小题1:High quality / Quality / Excellent education is available to teen-agers / youngsters now / nowadays.
小题2:This research course is intended to develop / cultivate students’ ability to analyze and solve problems.
小题3:Whether the / this new medicine will have any effect on the patients (who are) infected by this (kind of) virus remains unknown.
小题4:To guarantee that trips can begin/start on schedule, visitors are required to apply for the visa one month before departure / before they start / set off / set out.
小题5:Whatever you learn/study, what matters most is not the result of examinations, but the process of learning / study, which is often neglected by students.