1.She tried to out of the window to see the procession more clearly.
A. bend B. lean C. bow D. slope
2．Throughout most of their lives, humans learn and increase their mental capacity.
A. actually B. readily C. fairly D. primarily
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解析：1.lean vi. 倚，靠；lean out of the window(倚着窗户探出身去)，lean against a tree(背倚靠着树)，lean back in a chair (坐在椅子上背向后倾)，lean on a desk(靠在桌上)，指胸对桌子。bow是俯首的意思；bend弯曲的意思；slope倾斜的意思。
2. readily (=with no difficulty)容易地；They can readily be bought anywhere. (这些 东西在任何地方都能容易地买到。)actually 实际上；fairly 公平地；相当，划算；primarily主要地，首先；根本上。