6. The sailor _____ time to visit his family before the ship went to sea.
A. put in for
B. got round to
C. ask after
D. hold on to
[答案] A. put in for.
[注释]put in for(=make an application or request) 提出申请或请求;May I put in for five days' leave?( 我可以请5天假吗?)
get round to (doing sth.) 找到时间作某事;ask after 询问，问候;hold on to 坚持(接to 加名词)。
7. Throughout most of their lives, humans _____ learn and increase their mental capacity.
A. actually
B. readily
C. fairly
D. primarily
[答案] B. readily
[注释]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。
8. Through exposure to air, water, and organic matter, rocks _____ changes known as weathering.
A. undergo
B. transform
C. undertake
D. suspend
[答案] A. undergo.
[注释]undergo (=experience esp. suffering or difficulty) 经受：1)She underwent a thorough examination at the hospital. (她在医院接受了全面的检查。)2)The travelers underwent many difficulties. (这些旅行者经受了许多困难。)
undertake (=take up a [position]; start on [work]) 从事，负责(某事)：1)He undertook the responsibility for changes. (他负责对各种变化作出安排。)2)At first we could only undertake repair jobs.(起初我们只能干修理活。)3)We shall undertake the construction of this bridge. (我们将负责这座桥的修建工作。)
transform 改变;suspend 吊，悬挂;推迟，暂定。
本题译文：由于暴露于空气、水和有机物，岩石经受了称之为风化的变化。
9. She tried to _____ out of the window to see the procession more clearly.
A. bend
B. lean
C. bow
D. slope
[答案] B. lean.
[注释]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。
10. The problem had become _____ in his mind, and he could not decide what to do about it.
A. simplified
B. exaggerated
C. matured
D. isolated
[答案] B. exaggerated.
[注释]exaggerate(=say or believe more than the truth about sth.)夸张，夸大：It was a rabbit, not a lion. You are exaggerating as usual. (这是一只兔子，不是狮子。你经常夸大事实。)
simplify 简化;mature 使成熟;isolate 使孤立。
本题译文：这个问题在他头脑里夸大了，因此他无法决定该怎么办。
