单选题 Criticism of research lays a significant foundation for future investigative work, but when students begin their own projects, they are likely to that the standards of validity in fieldwork are considerably more rigorous than the standards for most library research. When students are faced with the concrete problem of proof by field demonstration, they usually discover that many of the "important relationships" they may have criticized other researchers for failing to demonstrate are very elusive indeed. They will find, if they submit an outline or questionnaire to their classmates for criticism, that other students make comments similar to some they themselves may have made in discussing previously published research. For example, student researchers are likely to begin with a general question but find themselves forced to narrow its focus. They may learn that question whose meanings seem perfectly obvious to them are not clearly understood by others, or that question which seem entirely objective to them appear to be highly biased to someone else. They usually find that the formulation of good research questions is a much more subtle and frustrating task than is generally believed by these who have not actually attempted it.

单选题 What does the author think about trying to find weaknesses in other people' s research?
A. It should only be attempted by experienced researchers.
B. It may cause researchers to avoid publishing good work.
C. It is currently being done to excess.
D. It can be useful in planning future research.

单选题 According to the passage, what is one major criticism students often make of published research?
A. The research has not been written in an interesting way.
B. The research has been done in unimportant fields.
C. The researchers did not adequately establish the relationships involved.
D. The researchers failed to provide an appropriate summary.

单选题 According to the passage, how do students in class often react to another student' s re search?
A. They react the way they do to any other research.
B. They are especially critical of the quality of the research.
C. They offer unusually good suggestions for improving the work.
D. They show a lot of sympathy for the student researcher.

单选题 According to the passage, what do student researchers often learn when they discuss their work in class?
A. Other students rarely have objective comments about it.
B. Other students do not believe the researchers did the work.
C. Some students feel that the conclusions are too obvious.
D. Some students do not understand the meaning of the researchers' questions.

单选题 According to the passage, student researchers may have to change their research projects because
A. their budgets are too high
B. their original questions are too broad
C. their teachers do not give adequate advice
D. their time is very limited