Perhaps the most important quality (shared) by all notable scientists is a strong determination (to solve) a problem, when it (arises) or to seek an explanation for a (phenomena).

A．rewarding poor performance may kill the creativity of students
B．punishment is more effective than rewarding
C．failing uninspired students helps improve their overall academic standards
D．discouraging the students’ anticipation for easy rewards is a matte of urgency

A．a news article
B．a journalistic interview
C．a research report
D．a preface