The duties to provide services for children in need are not ______to the local social services department.
A. responded
B. advocated
C. confined
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We pray that all nations be ______and that all people around the world live in peace.
A. reconciled
B. confined
C. involved
He suggested a small but ______improvement on our former plan; I really appreciate it.
A. intense
B. distinct
C. subsequent
DNA双螺旋每旋转一周,沿螺旋长轴上升高度是
A. 5.4nm
B. 2.37nm
C. 10.5nm
D. 0.54nm
E. 3.4nm
左旋多巴抗帕金森病的作用机制是
A. 在中枢转变为多巴胺
B. 阻断中枢胆碱受体
C. 阻断中枢多巴胺受体
D. 直接激动中枢多巴胺受体
E. 促进中枢多巴胺释放
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