回顾性研究( ).
A: an extrovert study
B: a prospective study
C: a retrospective study
D: an introvert study
A: an extrovert study
B: a prospective study
C: a retrospective study
D: an introvert study
举一反三
- Which statement is false about“a case series”? A: It is a controlled medical study B: It has a descriptive study design. C: It is not associated with extensive statistical analysis D: It could be either retrospective or prospective
- I suggested that you __________ hard. A: studied B: study C: will study D: should be study
- It is because English is useful _______. A: why we study it hard B: that we study it hard C: what we study hard D: which we study hard
- What does the author think of the study of English? A: The study of English is excellent preparation for professional life B: The study of English should be business-oriented. C: The study of English is restricting or impractical D: The study of English is highly rewarding and demanding.
- , or you ll fail the exam. A: Studying hard B: Study hard C: To study hard D: Study hardly