单项选择题
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A.A scarcity of jobs in their field.
B.Inadequate training in methods of biological research.
C.Difficulties in classifying all of the varieties of owls.
D.A lack of funding for their work with endangered species.
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单项选择题
A.Common causes of anger,B.Judging people’s behavior.C.Changing people’s attitudes.D.The effects of negative behavior.
A.Common causes of anger,
B.Judging people’s behavior.
C.Changing people’s attitudes.
D.The effects of negative behavior.
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单项选择题
A.During the First World War.B.During the Second World War.C.During the Civil War.D.During the Gulf War.
A.During the First World War.
B.During the Second World War.
C.During the Civil War.
D.During the Gulf War.
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