你可能喜欢
A.反牙合
B.牙列拥挤
C.深覆盖
D.开牙合
A.They are independent of each other, and often don’t collaborate with each other even on the same problems
B.Salaries are too low, difficult to attract the best staff
C.There is poor accountability
D.Resources often don’t reach the people most in need.
A.单叶对生
B.掌状复叶
C.秋色叶树种
D.奇数羽状复叶
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