1. With new technology, pictures of underwater valleys can be taken ________ colour.
A. by B. for
C. with D. in
[解析]句意：有了新技术，水下山谷的图片可以从颜色方面被拍摄。by 经由，通过;for 为了，对于;with 随着，带有;in 在……方面。
[答案]D
2. I always wanted to do the job which I'd been trained ________.
A. on B. for
C. by D. of
[解析]句意：我一直想干我为之接受过培训的工作。be trained for sth.“为……接受培训”。其他三项不符合题目要求。
[答案]B
3.________ good service, the restaurant offers different kinds of traditional Fujian dishes.
A. Far from B. Apart from
C. Instead of D. Regardless of
[解析]句意：除了好的服务外，这家餐馆还提供不同种类的传统福建美食。far from 离……远;远非;apart from 除……之外(还);instead of 代替，而不是;regardless of 不管。由句意可知B项正确。
[答案]B
4.He was a good student and scored ________ average in most subjects.
A. below B. of
C. on D. above
[解析]below average 在平均水平以下;on average 平均来说;above average 在平均水平以上。由 he was a good student 可知D项正确。句意：他是一个好学生，大部分科目得分都在平均水平以上。
[答案]D
5.Sometimes proper answers are not far to seek ________ food safety problems.
A. in B. to
C. on D. after
[解析]句意：有时，关于食品安全问题的答案不难找到。介词短语 to food safety problems 修饰 answers。answer 常与介词 to 搭配，意为“……的答案”。
[答案]B
6.We'd better discuss everything ________ before we work out the plan.
A. in detail B. in general
C. on purpose D. on time
[解析]句意：我们最好详细地把一切讨论一下之后再制定计划。in detail 详细地;in general 一般说来;on purpose 故意地;on time 准时。由句意可知A项正确。
[答案]A
7.Shirley, a real book lover, often brings home many books to read ________ the library.
A. in B. for
C. by D. from
[解析]句意：雪莉，一个真正的图书爱好者，经常从图书馆往家带书看。bring sth. from sp.“从某个地方带……”，符合句意。故D项正确。
[答案]D
8. When asked about their opinions about the schoolmaster, many teachers would prefer to see him step aside ________ younger men.
A. in terms of B. in need of
C. in favour of D. in praise of
[解析]本题考查介词短语。句意：当被问起对于校长的看法时，许多老师更愿意校长给年轻点的人让位。in favour of 意为“支持，有利于”，同 step aside 搭配起来意为“给……让位”。
[答案]C
9.Nick, it's good for you to read some books ________ China before you start your trip there.
A. in B. for
C. of D. on
[解析]句意：尼克，在你启程去那里之前，读一读关于中国的书比较好。on China“关于中国方面的”，即书的内容是介绍中国情况的。而 of China 则可能表示“来自中国的”或“中国出版的”等意思。故答案为D。
[答案]D
10.I'm sorry I didn't phone you, but I've been very busy ________ the past couple of weeks.
A. beyond B. with
C. among D. over
[解析]句意：对不起，我没给你打电话，但是在过去的几周里我一直很忙。beyond超过，超出;在(向)……的那一边;with 与，和;具有;among 在……之间;over 在此表示“在……期间，经过(一段)时间”。
[答案]D
11.Tired, Jim was fast asleep with his back ________ a big tree.
A. in B. below
C. beside D. against
[解析]句意：因为很劳累了，Jim 背靠着一棵大树，熟睡着。in 在……里面;below 在……下面;beside 在……旁边;against 顶着，倚着;反对，符合句意。
[答案]D
12.So far we have done a lot to build a lowcarbon economy, but it is ________ ideal. We have to work still harder.
A. next to B. far from
C. out of D. due to
[解析]句意：到目前为止，我们已做了许多来创建一种低碳经济，但是离理想的还差得很远。我们还要更加努力地工作。A项表示“紧邻，在……近旁”;B项表示“远非;几乎相反”;C项表示“从……出来;脱离”;D项表示“由于”。根据句意可知选B。
[答案]B
13.I guess we've already talked about this before but I'll ask you again just ________.
A. by nature B. in return
C. in case D. by chance
[解析]句意：我猜我们以前早就谈论过这件事了，以防万一我还要再问问你。by nature 天生地;in return 作为回报;in case 以防万一; by chance 偶然地。
[答案]C
14. We give enough time, space and love we can spare, and ________， dogs give us their all.
A. in all B. in fact
C. in short D. in return
[解析]句意：我们把能给予的时间、空间和爱都花在狗身上，作为回报，狗也向我们奉献出一切。in all 总共;in fact 事实上;in short 简言之;in return 作为回报，符合句意。
[答案]D
15.More and more highrise buildings have been built in big cities ________ space.
A. in search of B. in place of
C. for lack of D. for fear of
[解析]句意：因为缺乏空间，在大城市建起了越来越多的高层建筑。A项是“寻找”;B项是“代替”;C项是“因缺乏……”;D项是“唯恐，以免”。由句意知C项为正确答案。
[答案]C
16.It is illegal for a public official to ask people for gifts or money ________ favours to them.
A. in preference to B. in exchange for
C. in place of D. in agreement with
[解析]句意：公务员以为人们做好事作为交换向人们要礼物或金钱是违法的。in preference to 优先于;in place of 代替;in agreement with 与……相一致;in exchange for 交换，符合句意。
[答案]B
17.Would you mind not picking the flowers in the garden? They are ________ everyone's enjoyment.
A. in B. at
C. for D. to
[解析]句意：别采花园里的花好吗?这些花是供大家观赏的。for enjoyment“供观赏”，介词 for 表示目的。
[答案]C
18.I agree to his suggestion ________ the condition that he drops all charges.
A. by B. in
C. on D. to
[解析]句意：我同意他的建议，条件是他降低所有费用。on condition that“条件是”，引导条件状语从句。
[答案]C
19.Nowadays some hospitals refer to patients ________ name, not case number.
A. of B. as
C. by D. with
[解析]句意：现在一些医院提到病人时用名字而不是病例编号。by name“凭名字”为固定搭配，符合句意。
[答案]C
20.My father warned me ________ going to the West Coast because it was crowded with tourists.
A. by B. on
C. for D. against
[解析]句意：我父亲警告我不要去西海岸因为游客太多太挤。warn sb. against doing sth.“警告某人不要干某事”为固定搭配，故D项正确。
[答案]D
