未知题型
The U.S. Department of Agriculture played an important role in agricultural developments by
A．adopting hybrid seeds and genetic engineering of plants.
B．advocating the wide use of fertilizers and pesticides.
C．improving the environmental conservation of lands.
D．providing farmers with extension service of education.
- A.S.
B.adopting
C.
B．advocating
D.
C．improving
E.
D．providing
F.
【参考答案】
D
细节推断题。根据美国农照部定位到第二段最后两句话，文中的key对应题干中的important，由此可知其对农......
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