11.值得v.d_ _ _ _ _ _
答案:deserve
12.科学的a.s_ _ _ _ _ _ _ _ _
答案:scientific
13.缺陷,毛病n.d_ _ _ _ _
答案:defect
14.延长,拉长v.p_ _ _ _ _ _
答案:prolong
15.图书馆馆员n.l_ _ _ _ _ _ _ _
答案:librarian
16.药片n.t_ _ _ _ _
答案:tablet
17.命令,指挥v.c_ _ _ _ _ _
答案:command
18.明智的a.s_ _ _ _ _ _ _
答案:sensible
19.原则n.p_ _ _ _ _ _ _ _
答案:principle
20.次等的,劣等的a.i_ _ _ _ _ _ _
答案:inferior