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… propose a new way of tackling the problem.
… have found the concentration level to be stable.
 These researchers … have uncovered data contradicting this hypothesis.
... have now obtained the evidence/ are revealing the details of P.
... have yet to conduct a comparison of P and Q/ think that P.
 By studying P … the researchers can design Q.
 P happened in 1953, ... when researchers characterized Q.
•  Scientists in other fields ... believe/ maintain/ have discovered that P.
 Scientists... suggest a link between P and Q.
 Scientists who try to envision P ... lack data on Q/ seek to test Q.
 Scientists who wish to gain Q ... have yet to identify P.
... should confirm these results.
... must make indirect estimates.
 Other scientists ... may also reap the benefits of this research.
 Every scientist must be ... acutely sensitive to P.
•  The main questions ... that specialists now debate arc P and Q.
 Theorists ... postulate/ are arguing that IV anticipated that P.
... are still far from making testable predictions.
 To solve the problem, ... theorists turned to P.

•  Many critics ... fell that the theory's descriptivism went too far.
 The hypothesis ... was subjected to severe attacks by a large number of critics.
 The editor's choice ... seems to conform to P.
 Economists ... look at the individual as the decision-making unit.
•  The book's clear discussion of P ... is readily accessible to She general reader.
 P is a matter of great controversy ... in the scientific community.
 At the conference dedicated to P.
... F spoke about Q.
•  This society ... is based on P.
 Economics provides an understanding ... of how society functions.
 The problem with providing compulsory/ elementary/ general/ higher/
professional/ secondary/ college/ university education ... is that P.
 This field has its own theoretical orientation and ... a set of educational procedures
and methods.
•  Educators ... are alarmed at the literacy situation in P.
 This textbook ... is suitable for advanced/ basic/ introductory/ literacy courses in
climatology/ logic.
 A University of California study ... suggests that P.
 There is an. increasing interaction ... among scientists, universities and industry.
•  Computer software ... evolves/ is found in various formats.
 The software package NN ... integrates data about P.
 This program involves ... complete processing of input text.
 This parser is designed ... to process ambiguity in its input.
 Multimedia ... is information presented in a combination of P and Q.
...can exist on platforms P and Q/ has reached a critical stage.
...is ideal for scholarly works.

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