2023年中考英语总复习介词用法易错题专练（含答案）

2023中考英语总复习介词用法易错题专练附答案解析
1．— China's women's soccer team won a ticket to the Tokyo Olympics.
— Wow! ______ great they are! We are proud ______ them.
A．How; of B．How; in C．What; of D．What; in
2．We left __________such a hurry that we forgot our tickets.
A．on B．for C．to D．in
3．— What happened to Tony
— the morning of a rainy day, he a bike and hurt his legs.
A．In; put off B．On; fell off C．In; fell off D．On; put off
4．Since 1921, the Communist Party of China （中国共产党）has been leading the Chinese people _________ a better life.
A．of B．on C．at D．to
5．— I'm proud of our China's Tiangong Station plan.
—Me. too. We have taken another step ___________ our space dream.
A．behind B．towards C．across D．besides
6．The Communist Party of China will have its 100th birthday ______ July 1, 2021.
A．in B．on C．for D．at
7．I often do volunteer work in the library ______ Sundays.
A．at B．in C．on D．for
8．Cathy always makes good use of her time to study, even _________ her lunch break.
A．around B．during C．from D．between
9．As we all know, the Communist Party of China (中国共产党) was founded ______________ July, 1921.
A．in B．on C．at
10．My parents are going to Guangzhou by train ___________________ the morning of this Friday.
A．on B．in C．to D．at
11．一What's the most exciting holiday you've ever been _________
一For me, it was a trip to Iceland with my family to see the Northern Lights.
A．in B．on C．to D．from
12．Well done! It's clever ________ you to work out the Maths problem.
A．for B．of C．as D．in
13．After visiting the tower, we will take the boat back ________ the river to the railway station.
A．below B．along C．without D．opposite
14．The teacher encouraged the students to tell the story_____ English.
A．at B．with C．in D．for
15．No shouting, please! It's ________ the rules of the museum.
A．against B．of C．over D．among
16．— Where is Tianjin
— It is ________ the east of China. It's my hometown.
A．on B．over C．in D．at
17．Neil Armstrong was the first manto walk on the moon ____20July 1969.
A．in B．at C．until D．on
18．—How do you study ________ a test
—________ working hard.
A．in, By B．in, With C．for, By D．for, With
19．When the bell rang, our English teacher came into the classroom __________ a book.
A．in B．during C．on D．with
20．Go straight and you will see a bakery ____________ your right.
A．to B．on C．at D．in
21．It's time ________ class. I must go into the classroom.
A．for B．of C．in D．after
22．— What about the roller coaster in Shanghai Disneyland, Tommy
— Fantastic. I couldn't stop screaming and laughing _________ the whole ride.
A．for B．on C．with D．through
23．A heavy storm hit the US heavily last Saturday and farms the country suffered badly in that disaster.
A．over B．across C．through D．outside
24．Tom was angry _________________ Lucy for losing his favourite book.
A．of B．for C．to D．with
25．Our Chinese teacher came in the room _______________ a smile _______________ her face.
A．with; in B．with; on C．on; with D．with; at
26．My cousin arrived ________ Shanghai ________ the morning of August 3rd.
A．at; on B．in; on C．at; in D．in; in
27．Let's vote China's Inspirational Role Models(感动中国人物) the Internet, shall we
A．for; in B．to; on C．on; over D．for; on
28．The jacket is made _______ plastic and it can check your blood pressure.
A．of B．by C．up of D．for
29．When are you arriving I'll pick you up the station.
A．at B．to C．on D．off
30．Nanjing Zijinshan Insect Museum, which will be open to the public soon, was formed at the foot of Zhongshan ________ April 2nd.
A．in B．on C．at D．from
31．Usually I make breakfast for my family _________ Saturdays.
A．at B．in C．on D．to
32．The bank is _____________the left of the supermarket. It's not far.
A．in B．for C．on D．at
33．More villagers will move to new houses ______2021.
A．in B．on C．at D．for
34．It is going to rain. Take an umbrella ________ you.
A．with B．at C．in D．from
35．The Ninth Xichang Dragon Boat Race was held ___________June 9th last year. Many people watched it ___________TV.
A．in; on B．in; in C．on; on D．on; in
36．You'd better not hang out after school _______ telling your parents. They may worry about you.
A．by B．with C．without D．after
37．—Did you go on the Silk Road trip by train
—Yes. The train was great, just like a hotel ________ wheels — it had all that I needed.
A．in B．at C．on D．by
38．To complete her online learning, Suzy needs a computer or a mobile phone to receive messages___________ her teachers.
A．with B．during C．from D．through
39．— Which is your uncle
—The big man, smartly dressed______________ a suit and tie.
A．on B．with C．for D．in
40．—How long have you had the cellphone, Kangkang
—I've had it two months. It helps me a lot.
A．for B．since C．in D．on
41．The children here improve their English ______________ listening and speaking every day.
A．on B．through C．with D．by
42．All of us helped to clean up the old people's home _______ Eric. He had a bad cold.
A．besides B．against C．except D．with
43．—Can you play volleyball or basketball
— __________of them. I'm good at ball games.
A．Both B．Either C．Neither D．None
44．Many people always go running ________ the park when they are free.
A．of B．on C．in D．with
45．We usually have lunch __________ 12 o'clock at school.
A．in B．on C．at D．of
2023中考英语总复习介词用法易错题专练答案解析
1．— China's women's soccer team won a ticket to the Tokyo Olympics.
— Wow! ______ great they are! We are proud ______ them.
A．How; of B．How; in C．What; of D．What; in
答案：A
解析：句意：——中国女子足球队赢得了一张去东京奥运会的门票。——哇！她们多么棒！我们以她们为傲。考查感叹句及介词辨析。中心词great是形容词，用how引导的感叹句结构：how+形容词+主语+谓语，排除C和D选项。in在……里；of……的。第二个空是固定搭配：be proud of"以……为骄傲"，故选A。
总结：考查固定搭配，how引导的感叹句和介词辨析。注意感叹句中修饰形容词用how引导，注意固定搭配be proud of。
2．We left __________such a hurry that we forgot our tickets.
A．on B．for C．to D．in
答案：D
解析：句意：我们走得太匆忙以至于忘了带票。in a hurry，匆忙地，固定搭配，故答案为D。
总结：考查介词辨析。注意识记固定搭配中介词in的用法。
3．— What happened to Tony
— the morning of a rainy day, he a bike and hurt his legs.
A．In; put off B．On; fell off C．In; fell off D．On; put off
答案：B
解析：句意：——托尼怎么了？——在一个雨天的早晨，他从自行车上摔下来，伤了腿。in用于年/月/季节/泛指的上/下午/晚上前；on用于具体的某一天或具体某一天的上/下午/晚上前；put off推迟；fell off从……上掉下来；根据"the morning of a rainy day"可知，此处是表示具体某一天的早上，应用介词on；由"a bike and hurt his legs"可知，第二空表达的是从自行车上掉下来，应用fell off，故选B。
总结：考查介词辨析和短语辨析，注意介词on和动词短语fall off的用法。
4．Since 1921, the Communist Party of China （中国共产党）has been leading the Chinese people _________ a better life.
A．of B．on C．at D．to
答案：D
解析：句意：1921年以来，中国共产党领导中国人民过上了更好的生活。根据固定搭配，lead to，带领去，可知应有介词to，故选D。
总结：考查介词辨析。注意掌握 lead to 的用法。
5．— I'm proud of our China's Tiangong Station plan.
—Me. too. We have taken another step ___________ our space dream.
A．behind B．towards C．across D．besides
答案：B
解析：句意：——我为我们中国的天宫站计划感到自豪。——我也是。我们朝着我们的太空梦想又迈出了一步。A behind 在……后面；B towards 朝着；C across 穿过；D besides 在……旁边。根据 have taken another step 和our space dream可知是朝着我们的太空梦想又迈出了一步，故选B。总结：考查介词辨析。注意识记 towards 的用法。
6．The Communist Party of China will have its 100th birthday ______ July 1, 2021.
A．in B．on C．for D．at
答案：B
解析：句意：中国共产党将于2021年7月1日迎来100岁生日。 in用于年/月/季节等泛指的时间前；at用于具体的钟点前；on用于具体的某一天前；for后接一段时间。根据July 1st, 2021可知，具体的一天前用介词on，故选B 。
总结：考查介词辨析。注意介词on的基本用法。
7．I often do volunteer work in the library ______ Sundays.
A．at B．in C．on D．for
答案：C
解析：句意：星期天我经常在图书馆做义工。at用于具体的钟点前；in用于年、月、季节前；on用于具体的某一天前；for后接一段时间；Sundays指具体的星期，前面要用介词on。故选C。
总结：考查介词辨析。掌握不同的时间介词的用法。
8．Cathy always makes good use of her time to study, even _________ her lunch break.
A．around B．during C．from D．between
答案：B
解析：句意：凯茜总是很好地利用她的时间去学习，甚至午饭期间。A. around在四周；B. during在期间；C.from从；D. between在……之间。根据句中 her lunch break，可知此处应为介词"during"。故正确答案为B。
总结：考场介词辨析。注意during的基本含义及用法。
9．As we all know, the Communist Party of China (中国共产党) was founded ______________ July, 1921.
A．in B．on C．at
答案：A
解析：句意：众所周知，中国共产党成立于1921年7月。in后跟表示年份，月份，季节，上午，下午或晚上的名词；on用在具体的某一天或某一天的上午，下午或晚上等名词前面；at后跟具体的时间点。根据空后的时间July,1921可知是在月份的前面，用介词in，故答案为A。
总结：考查介词辨析。注意识记识记介词的不同用法。
10．My parents are going to Guangzhou by train ___________________ the morning of this Friday.
A．on B．in C．to D．at
答案：A
解析：句意：在这个周五早上，我父母打算乘火车去广州。on，在星期几和具体的某一天（上，下午晚上）；in，泛指一般意义的上午，下午和晚上以及年月等时间范围；to，朝……；at，在几点钟。根据下面周五的早上，可知表示具体的某一天的早上要用on。故选A。
总结：考查介词辨析。区别不同时间介词的用法。
11．一What's the most exciting holiday you've ever been _________
一For me, it was a trip to Iceland with my family to see the Northern Lights.
A．in B．on C．to D．from
答案：B
解析：句意：——你度过的最激动人心的假期是什么？——对我来说，是一次和家人去冰岛看北极光的旅行。on holiday，度假，固定搭配，故选B。
总结：考查固定搭配，注意识记on holiday的用法。
12．Well done! It's clever ________ you to work out the Maths problem.
A．for B．of C．as D．in
答案：B
解析：句意：干得漂亮！你能解出这道数学题真是太聪明了。for为了；of……的；as作为；in在……中。分析“It's clever…you to work out the Maths problem.”可知，此处是“It's+adj+of sb to do sth”句型，句中形容词用来修饰sb，故选B。
总结：考查介词辨析。识记介词of的用法。
13．After visiting the tower, we will take the boat back ________ the river to the railway station.
A．below B．along C．without D．opposite
答案：B
解析：句意：参观完塔后，我们将乘船沿河返回火车站。below，在……下面；along，沿着；without，没有；opposite，在……对面；根据“the river to the railway station”可知，此处是指沿着河，故选B。
总结：考查介词辨析。识记介词along的用法。
14．The teacher encouraged the students to tell the story_____ English.
A．at B．with C．in D．for
答案：C
解析：句意：老师鼓励学生们用英语讲故事。at在，以；with和……一起；用（工具，手段等）；in在……里面；用（语言、材料等）；for为了。根据语境，在这里表"用英语讲故事，English英语，是语言，用in，in English用英语，故答案为C。
总结：考查介词辨析。注意识记介词in后跟表示语言名词的用法。
15．No shouting, please! It's ________ the rules of the museum.
A．against B．of C．over D．among
答案：A
解析：句意：请不要大喊大叫！这违反了博物馆的规定。against违反；of……的；over在……上面；among在……之中。根据上文“No shouting”可知，说话者在制止他人大声喧哗，因为这是违反博物馆规定的。故选A。
总结：考查介词辨析，首先识记介词区别，然后根据句意确定，识记固定搭配be against。
16．— Where is Tianjin
— It is ________ the east of China. It's my hometown.
A．on B．over C．in D．at
答案：C
解析：句意：——天津在哪里？ ——它在中国东部，是我的家乡。on表示毗邻，接壤；over在……上；in表示在……范围之内；at表示在……附近，旁边。根据常识可知，天津是中国的一部分，所以其在中国范围之内，应用介词in。故选C。
总结：考查介词辨析，注意识记on、over、in和at区别，然后根据常识确定答案。
17．Neil Armstrong was the first manto walk on the moon ____20July 1969.
A．in B．at C．until D．on
答案：D
解析：句意：在1969年7月20日，Neil Armstrong是第一个在月球上行走的人。in用在某年、某月、某个季节前；at用在具体的点时间前；until，直到，在这里意思不符合；on用在表示具体某一天的时间前，如某年某月某日，故选D。
总结：考查介词辨析。识记各类用在时间前的介词的用法。
18．—How do you study ________ a test
—________ working hard.
A．in, By B．in, With C．for, By D．for, With
答案：C
解析：句意：——你是如何为考试而学习的？——通过努力学习。in在……里面；by通过；with和；for为了。由句中“study”和“a test”可知，此句是问如何为了考试而学习，用介词for；问句中“how”表示怎样，即用什么方法，所以答语用介词by，by doing sth.通过做某事，故选C。
总结：考查介词辨析。注意熟记一些固定结构用法。
19．When the bell rang, our English teacher came into the classroom __________ a book.
A．in B．during C．on D．with
答案：D
解析：句意：铃响时，我们的英语老师拿着一本书走进了教室。in在……里面；during在……期间；on在……上面；with和……一起。根据"our English teacher came into the classroom ... a book."可知是铃声响的时候，英语老师拿着一本书走进了教室，这里表示的是伴随状态，用介词with，故选D。
总结：考查介词辨析。注意介词with的基本含义及用法。
20．Go straight and you will see a bakery ____________ your right.
A．to B．on C．at D．in
答案：B
解析：句意：直走，你会看到右手边有一家面包店。A to到；B on在……上；C at在；D in在……里；on one's right，在右边，固定搭配，故选B。
总结：考查介词辨析，注意识记不同介词的短语搭配。
21．It's time ________ class. I must go into the classroom.
A．for B．of C．in D．after
答案：A
解析：句意：该是上课的时间了，我们必须进教室。根据固定句式It's time for sth/It's time for sb to do sth，是时候做某事，可知，介词用for。故选A。
总结：考查介词辨析。注意熟记一些固定搭配和固定句式的介词。
22．— What about the roller coaster in Shanghai Disneyland, Tommy
— Fantastic. I couldn't stop screaming and laughing _________ the whole ride.
A．for B．on C．with D．through
答案：D
解析：句意：——Tommy, 上海迪斯尼乐园的过山车怎么样 ——棒极了。整个过程我都忍不住尖叫和大笑。A： for，为了，表示目的。B： on，在……上，表示方位。C： with，有，表示伴随。D： through，从头到尾，表示过程。根据 I couldn't stop screaming and laughing _________ the whole ride.可知，整个过程我都忍不住尖叫和大笑。此处使用through来表示“从头到尾“，故选D。
总结：考查介词辨析。注意介词的意思以及用法，再结合语境，最后选出合适的答案。
23．A heavy storm hit the US heavily last Saturday and farms the country suffered badly in that disaster.
A．over B．across C．through D．outside
答案：B
解析：句意：上周六，一场强风暴袭击了美国，全国各地的农场遭受了严重的灾难。over在……之上；across横过，越过；through穿过；outside在……外面，外部；根据 A heavy storm hit the US heavily last Saturday 可知是横贯整个国家，across the country全国各地，故答案为B。
总结：考查介词辨析。注意识记不同介词和介词短语的用法。
24．Tom was angry _________________ Lucy for losing his favourite book.
A．of B．for C．to D．with
答案：D
解析：句意：汤姆因露西丢了他最喜欢的书而生她的气。of……的，表示所属关系；for为了,to对于，with和，固定词组，be angry with sb.和某人生气。故选D。
总结：考查介词辨析。注意识记of，for，to，with词义及用法，掌握词组be angry with sb。
25．Our Chinese teacher came in the room _______________ a smile _______________ her face.
A．with; in B．with; on C．on; with D．with; at
答案：B
解析：句意：我们的语文老师脸上带着微笑走进了房间。with有，带有，表示伴随状况；in在……里面；on在……上；根据句意可知是脸上带着笑，故答案为B。
总结：考查介词辨析。注意识记介词with和on的用法。
26．My cousin arrived ________ Shanghai ________ the morning of August 3rd.
A．at; on B．in; on C．at; in D．in; in
答案：B
解析：句意：我表弟8月3日上午到达上海。arrive at/in 到达，at后跟小地点，in跟大地点；具体到某一天的上午，下午或晚上用介词on；in后跟年份，月份，季节或上午，下午或晚上等名词。上海是大地方，第一个空用in； the morning of August 3rd，八月三号的上午，用介词on；故答案为B。
总结：考查介词辨析。注意识记介词on和in的用法。
27．Let's vote China's Inspirational Role Models(感动中国人物) the Internet, shall we
A．for; in B．to; on C．on; over D．for; on
答案：D
解析：句意：让我们在网上投票选出感动中国人物，好吗？根据句意，vote for sb.为某人投票，为固定搭配；结合Internet可知，此处表示“在网上”，on the Internet在网上，为固定搭配。故选D。
总结：考查介词辨析。首先弄清句意，然后识记vote for sb.和on the Internet的固定搭配。
28．The jacket is made _______ plastic and it can check your blood pressure.
A．of B．by C．up of D．for
答案：A
解析：句意：这件夹克衫是由塑料制作的，它可以测量你的血压。be made of由......制作，能看得出原料；be made by被.....制造；be made of由......组成；be made for为......制作。根据 The jacket is made...plastic ，可知，这件夹克衫是塑料制成的，能看得出原料，此处使用be made of符合语境。故选A。
总结：考查介词辨析。注意固定搭配的介词的用法及含义。
29．When are you arriving I'll pick you up the station.
A．at B．to C．on D．off
答案：A
解析：句意：你什么时候到？我将在车站接你。at在……，后接小地点；to朝，向；on在某物体表面上；off离开。the station车站，是小地点，其前用at。故选A。
总结：考查介词辨析，首先识记介词词义，然后根据关键词station确定介词。
30．Nanjing Zijinshan Insect Museum, which will be open to the public soon, was formed at the foot of Zhongshan ________ April 2nd.
A．in B．on C．at D．from
答案：B
解析：句意：南京紫金山昆虫博物馆于4月2日在中山山脚下建成，不久将向公众开放。具体到某一日前用介词on ，根据 April 2nd.，可知用介词on ，故答案为B。
总结：考查介词辨析。注意识记介词on的用法。
31．Usually I make breakfast for my family _________ Saturdays.
A．at B．in C．on D．to
答案：C
解析：句意：通常我在星期六为家人做早餐。at用于几点钟或节日前；in用于泛指的上午、下文、晚上前；on用于星期几、具体日期或具体日期的上午、下午、晚上前；to表示时间还未到。星期几的前面使用介词on。故选C。
总结：考查介词辨析，注意介词on的用法。
32．The bank is _____________the left of the supermarket. It's not far.
A．in B．for C．on D．at
答案：C
解析：句意：银行在超市的左边。它不远。in在……里面；for为了；on在……上面；at在。on the left of，在……左边，固定用法。故选C。
总结：考查介词辨析，注意on the left of的用法。
33．More villagers will move to new houses ______2021.
A．in B．on C．at D．for
答案：A
解析：句意：2021年将有更多的村民搬进新房。A、in后跟年份，月份等；B、on后跟星期，表示具体在某天；C、at后跟具体时刻；D、for加一段时间。空格后的2021是年份，故选A。
总结：考查介词辨析，注意识记in，on，at，for的词义和不同用法。
34．It is going to rain. Take an umbrella ________ you.
A．with B．at C．in D．from
答案：A
解析：句意：要下雨了，你带把伞。考查介词。with和；at指具体的点；in在……里面；from从。根据“Take an umbrella”可知此处表示伴随，用介词with。故选A。
总结：考查介词辨析，注意介词with的用法。
35．The Ninth Xichang Dragon Boat Race was held ___________June 9th last year. Many people watched it ___________TV.
A．in; on B．in; in C．on; on D．on; in
答案：C
解析：句意：第九届西昌龙舟大赛于去年6月9日举行。很多人在电视上看了它。时间介词in后接年、月、季节；on后接具体的某一天/某一天上午或下午。June 9th ，6月9日属于具体某一天应该用on，排除AB；in/on都可以用作表示工具，手段的介词，使用某种语言用介词in，通过收音机，电话或电视等则使用介词on。故选C。
总结：考查介词辨析，注意识记介词on的用法。
36．You'd better not hang out after school _______ telling your parents. They may worry about you.
A．by B．with C．without D．after
答案：C
解析：句意： 放学后你最好不要不告诉你的父母就在外面逛。他们可能会担心你。A靠着，B有，C无，D之后，根据他们可能会担心你，可知是不要不告诉你的父母就在外面逛，故选C。
总结：考查介词辨析，注意without的用法。
37．—Did you go on the Silk Road trip by train
—Yes. The train was great, just like a hotel ________ wheels — it had all that I needed.
A．in B．at C．on D．by
答案：C
解析：句意：———你们是坐火车去丝绸之路之旅的吗？———是的。这列火车棒极了，就像一个有轮子的旅馆—它有我需要的一切。in在……里；at在……；on在……上；by通过。根据题干中a hotel ____ wheels，可推出此处用a hotel on wheels表示车轮上的旅馆。故选C。
总结：考查介词辨析，注意识记介词on的用法。
38．To complete her online learning, Suzy needs a computer or a mobile phone to receive messages___________ her teachers.
A．with B．during C．from D．through
答案：C
解析：句意：为了完成在线学习，苏西需要一台电脑或一部手机来接收老师的信息。with，有，during，在……期间，from，从……，through，穿过，根据句意理解可知，这里表达的是“从老师那里得到信息”，英语中“从……”是from，故选C。
总结：考查介词，注意from的用法。
39．— Which is your uncle
—The big man, smartly dressed______________ a suit and tie.
A．on B．with C．for D．in
答案：D
解析：句意：——哪一个是你的叔叔？——那个高大男人，穿着西装打着领带，很精神。on在……上；with伴随；for为了；in穿着。空格后a suit and tie是指衣物，结合所给选项，只有介词in后面可以接衣物，表示“穿着……”，所以空格处填in。故选D。
总结：考查介词辨析和固定搭配。注意in后面接衣物。
40．—How long have you had the cellphone, Kangkang
—I've had it two months. It helps me a lot.
A．for B．since C．in D．on
答案：A
解析：句意：—— 康康，你用手机多久了？—— 我拥有它两个月了。它帮助了我很多。 A. （表示一段时间）计，后跟时间段； B.从，后跟时间点；in+时间段一般与一般将来时连用。 若表示星期几或某一特定的日期或某个特定日期的上午，下午或者晚上，则用on。此处是现在完成时，且空后为时间段，应该用for，故选A。
总结：考查介词辨析，注意介词for的用法。
41．The children here improve their English ______________ listening and speaking every day.
A．on B．through C．with D．by
答案：D
解析：句意：这里的孩子们通过每天听和说来提高英语水平。on在……上；through通过，主要表示方式或方法；with用，表示具体的方法或工具；by通过，表示抽象的方式或手段。此处指抽象的方式，用介词by。故选D。
总结：考查介词辨析，注意介词by的用法。
42．All of us helped to clean up the old people's home _______ Eric. He had a bad cold.
A．besides B．against C．except D．with
答案：C
解析：句意：除了埃里克，我们都帮助老人的家打扫卫生。他得了重感冒。besides除……之外（还有）除去的包含在内；against反对；except除……之外（除去的不包括在内）；with和……在一起；根据He had a bad cold.可知Eric没有去，排除在外，故答案为C。
总结：考查介词辨析。注意识记介词except的用法。
43．—Can you play volleyball or basketball
— __________of them. I'm good at ball games.
A．Both B．Either C．Neither D．None
答案：A
解析：句意：——你会玩排球还是篮球？——两个都会。我擅长玩球。A两者都，B两者之一，C两者都不，D都不。根据 good at ball games ，可知我两种球都会玩，故选A。
总结：考查介词辨析，注意理解题意，选择正确介词。
44．Many people always go running ________ the park when they are free.
A．of B．on C．in D．with
答案：C
解析：句意：很多人在他们有空的时候经常在公园里跑步。根据谓语go running去跑步和地点 the park公园，可知应用介词in表“在里面”。故选C。
总结：考查介词辨析。注意方位介词in有表在大地点和在里面的意思。
45．We usually have lunch __________ 12 o'clock at school.
A．in B．on C．at D．of
答案：C
解析：句意：我们在学校通常在十二点吃午饭。A： in+年、月；B： on+日期；C： at+具体时间点；D： of……的。根据12 o'clock，可知是具体时间点，故选C。
总结：考查介词辨析，注意识记at的用法。