单项选择题

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．The woman’s camera is broken.B．He wasn’t at Dan and Linda’s wedding.C．Someone else at the wedding took good pictures.D．Dan and Linda didn’t hire a professional photographer.
A．The woman’s camera is broken.
B．He wasn’t at Dan and Linda’s wedding.
C．Someone else at the wedding took good pictures.
D．Dan and Linda didn’t hire a professional photographer.
单项选择题
A．American industrialists.B．French economists.C．International leaders.D．Civil War veterans.
A．American industrialists.
B．French economists.
C．International leaders.
D．Civil War veterans.
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