单项选择题
A．for B．as C．at D．with
A．Models of 164 families of flowering plants. B．Magnified details of flower parts. C．Several species of native birds. D．A group of diseased fruits.
A．traditional beliefs among people living in different areas B．results of certain study on people living in different climate zones C．belief that has no longer accepted by most of people D．study done by Ellsworth Huntington alone