题目内容
（请给出正确答案）
A.experimental
B.descriptive
C.Action research
D.A case study
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更多“（）research must be analytic.”相关的问题
We must rely on out own efforts to (convert the results of scientific research into productivity).
A、The future directions.
B、The concise abstract.
C、The personal information.
D、The research questions.
Scientists perform careful experiments and do wide research because______.
A.they must learn to destroy all the insects that we need
B.they must be sure one insect pest is not traded for another
C.research keeps them from inventing new insecticide for the crops
D.research helps them find a way to kill all insects
Natural history exhibits differ from art exhibits in that they（）.
A．are bought
B．are not displayed to the public
C．often must be constructed
D．do not require research
the way in which consumers will spend their money must study consumer behavior.
A、How general your search topic might be
B、Its relevance to the assignment
C、The amount of research material available on the topic
D、How narrow your research topic must be
From paragraph one, we can infer that
A．market research is a waste of money.
B．market research must not be used during an economic recession.
C．market research doesn't necessarily help companies make products that can meet customers' need.
D．customers are too hard to please.
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