53. We agree to accept _D_ they thought was the best tourist guide.
    A whatever B whomever C whichever D whoever
    they thought是插入語，可以不看; tourist guide 導(dǎo)游。
    56. Although many people view conflict as bad， conflict is sometimes useful _C_ it forces people to test relative merits of their attitudes and behaviors.
    A by which B to which C in that D so that
    句子的意思是：如果沖突以后能回家反省一下自己是好事情。
    in that 因?yàn)? conflict n. 沖突; relative merits 相比較而言的優(yōu)點(diǎn); so that 以至于。
    57. He is _A_ about his chances of winning a gold medal in the Olympics next year.
    A optimistic B optional C outstanding D obvious
    optimistic adj. 樂觀的; pessimistic adj. 悲觀的; be optimistic about 對…持樂觀態(tài)度。
    optional adj. 隨意的，任選的，非強(qiáng)制性的; optional courses 選修課;
    outstanding adj. 卓越的，杰出的; obvious adj. 明顯的。
    58. Sometimes I wish I _B_ in a different time and a different place.
    A be living B were living C would live D would have lived
    wish后加的句子一定要用虛擬語氣。
    與現(xiàn)在事實(shí)相反，wish后的句子經(jīng)常用一般過去時來體現(xiàn)虛擬語氣。
    59. The director was critical _C_ the way we were doing the work.
    A at B in C of D with
    be critical of 對。。.愛挑剔的，批評。
    60. In a sudden _B_ of anger， the man tore up everything within reach.
    A attack B burst C split D blast
    within reach 夠得著; out of reach 夠不著; burst 爆發(fā)，迸發(fā);
    burst可以與很多詞語搭配表示突然發(fā)作：
    1 能與人的情緒(喜、怒、哀、樂)搭配; 2 能與掌聲、笑聲搭配。