2020-2021学年江苏涟水县金城外国语中学八年级下学期期末考试英语卷
2020-2021学年江苏涟水县金城外国语中学八年级下学期期
末考试英语卷
学校:___________姓名：___________班级：___________考号：___________
一、单选题
1．--Your Japanese is so good. How long have you been in Japan?
-- __________ I was five.
A．Since B．Before C．Until D．When
8．What’s the weather ___ in summer ?
A．like B．is C．cool D．hot
11．Jim said the book ____ very interesting.
A．be B．is C．was D．are
二、用所给单词的正确形式填空
14．There _______ a mother ,a father and three children in the family.
A．be B．have C．are D．is
三、句子配对
15．—Michael has made great progress recently.
—____, and ____.
A．So he has; so you have B．So he has; so have you
C．So has he; so have you D．So has he; so you have
四、完型填空
Music and Behavior
Where did you go yesterday? Did you hear 16 at any of those places? Today most stores and restaurants play music. You might 17 hear music in an office or on a farm.
Scientists believe that music changes the 18 people behave. According to some scientists, the sound of western classical music makes people 19 richer. When a restaurant plays classical music, people spend 20 money on food and drinks. When the restaurant plays 21 music, people spend less money. With 22 music, people spend even less.
Scientists also 23 that loud, fast music makes people eat faster. In fact, people
24 their food faster when the music gets faster. Some restaurants play fast music during their 25 hours. This gets people to eat faster and leave more quickly. In this way, restaurants 26 make more money.
Some scientists think that music makes you think and learn better. They say 27
music helps students to be more active. It is true that people earn better when they are
28 . And listening to music can help you relax.
The 29 time you hear music somewhere, be 30 . It might change the way you do things.
16．A．music B．stores C．songs D．sound 17．A．already B．even C．hardly D．never 18．A．way B．time C．idea D．place
19．A．become B．get C．feel D．look 20．A．much B．more C．little D．less 21．A．pop B．modern C．light D．country 22．A．no B．much C．any D．some 23．A．expect B．hope C．realize D．believe 24．A．cook B．order C．eat D．make 25．A．free B．busy C．happy D．sad 26．A．can B．should C．can’t D．needn’t 27．A．how B．why C．what D．that 28．A．excited B．interested C．confident D．relaxed 29．A．first B．second C．next D．last 30．A．quiet B．quick C．happy D．careful
五、阅读单选
Michael Jackson is one of the world’s best singers. Michael Jackson was born in the middle west of Gary, Indiana, in 1958. He began singing with his four brothers. They called the group “Jackson Five”. The group became very popular after appearing on a television progam. They started singing in 1965, became popular soon. In 1970 the group made their first record the name of “I Want You Back”. It was very popular. One of their hit records was “Never Say Goodbye”.
Michael was good at dancing as well as singing, for example, his dance moves and moon walking. He was asked to act in a film in 1978 for the first time, in the same year he made a record on his own, which sold eight million copies all over the world.
Michael nearly didn’t go out because he was too fa mous. Once his fans went off in a faint（晕倒） when they saw him at the concert. No one can do it by now. He lived in a large house and kept lots of animals. He never ate meat. He often raises money for charity. This made him win the Guinness World Records（吉尼斯世界纪录）in 2006. He died on June 25th, 2009, but he would live in our heart forever.
31．What’s the name of their first record?
A．“Never Say Goodbye” B．“See You, See Me”
C．“I Want You Back” D．“On the World”
32．Michael was good at __________ according to the passage.
A．rock music B．street dance
C．playing the piano D．moon walking
33．Why did Mochael have to stay at home most of the time?
A．Because he was too famous
B．Because he often felt lonely.
C．Because he had no friends
D．Because his company asked him to do so
34．Chicago On a Budget
How to have fun in Chicago without spending a lot of money?
Sightseeing
○ The Art Institute of Chicago has a fine collection of photos and paintings. The ticket is ＄10.00,but go on Tuesdays and you’ll get in free(免费).
○ The Sears Tower is the world’s third tallest building. By going to the 103rd floor, you can get a great view of the whole city! All for only ＄8.50.
○ There are free concerts in Grant Park in summer. They are held Wednesday through Saturday night at 7:30 p.m.
○ Attend the taping of a TV show for free. The Oprah Winfrey Show and The Jenny Jones Show both offer tourists free tickets. For The Oprah Winfrey Show you’ll have to book tickets at least a month before.
Places to stay
You can get a hotel for ＄100 to ＄ 300 a day. However, you can get a room in the dormitory(宿舍) at Roosevelt University for ＄215 for a whole week! But you have to stay for 30 days to get this great rate(优惠).
【小题1】This passage is written for telling us ___________.
A．Chicago is a big and beautiful city B．where we can see fine photos and paintings
C．how to make a cheap trip in Chicago D．there are many free concerts in Chicago
【小题2】It will cost you _________ if you visit the Art Institute instead of the Sears Tower on Sundays.
A．more B．less C．the same D．none
【小题3】You may go to ________ if you like to get a great view of the whole city.
A．the Art Institute B．the Sears Tower C．Roosevelt University D．Grant Park
【小题4】You have to spend at least _____________in all to stay in a dormitory room at Roosevelt University at a good rate.
A．＄100 B．＄300 C．＄215 D．＄860 【小题5】According to this passage, which of the following statements in NOT TRUE ?
A．You are free to go to the Art Institute on Tuesdays.
B．Free Grant Park concerts are held four nights a week in summer.
C．The Sears Tower is the world’s third tallest building.
D．You can get tickets to The Oprah Winfrey as soon as you arrive.
Bamboo (竹子) is one of nature's (自然) most surprising plants. Many people call this plant a tree, but it is a kind of grass.
Like other kinds of grass, a bamboo plant may be cut very low to the ground, but it will grow back very quickly. A Japanese scientist reported one bamboo plant which grew 1. 5 metres(4 feet) in 24 hours! Bamboo grows almost everywhere in the world except Europe. There are more than 1, 000 kinds of bamboo. Not all bamboo looks the same. Some bamboo plants are very thin. They may only grow to be a few centimetres wide while others may grow to more than 30 centimetres (1 foot) across. This plant also comes in different colours, from yellow to black to green.
Bamboo has been used to make many things such as hats and kitchen tools( 厨房用具). Because it is strong, bamboo is also used to build buildings. Many Asian countries have used bamboo for hundreds of years. They often use bamboo for buildings and supporting (支撑) new buildings and bridges while they are being built.
In Africa, poor farmers are taught how to find water using bamboo. These African
countries need cheap way to find water because they have no money, and their fields often die from no rain and no water. Bamboo pipes( 管子) help poor farmers bring water to their thirsty fields without spending a lot of money. 35．How is bamboo like grass?
A．It grows quickly. B．It's wood. `C．it is easy to cut. D．It is very thin. 36．Though you can see bamboo everywhere, it doesn't grow .
A．in China B．in Europe C．on mountains D．in Africa
37．Why is bamboo used by African poor farmers? Because .
A．it is cheap B．it has different colours
C．it is strong D．it has been used by Asians
38．Bamboo pipes can .
A．make money B．be trees C．grow quickly D．carry water
39．In Asia, bamboo has been used for .
A．a short time
B．many thousands of years
C．many hundreds of years
D．about 100 years
40．Basketball is still a young game. It's over a hundred years old. In the winter of 1891, a certain college was having some trouble with its boy students. The weather was bad and the students had to stay indoors. As they couldn't play outdoors, they were unhappy, and some even got into fights from time to time.
Some of the teachers, at the college asked Dr. Naismith to invent a game so that the students might have something to play with. It was not easy to invent such a game because it had to be played indoors , and the court (球场) was not very large.
Dr. Naismith thought for a few days and invented a kind of ball game. It was a fast, wonderful game with much moving and passing of the ball. It was played between two teams. To make a score , the ball had to be thrown into the basket ten feet(英尺) above the floor on the wall . At each end of the court there was such a basket. At first, Dr. Naismith wanted to throw the ball into a box. As he could not find boxes of the right size, he had to use fruit baskets instead.
That is how the game got its name.
【小题1】How long is it since basketball was invented?
A．1000 years B．More than 100 years
C．1100 years D．Less than 100 years
【小题2】The students felt unhappy because _______.
A．they had much homework to do
B．they often got into fights
C．they couldn't play outdoors
D．they had little time to study
【小题3】Who asked Dr. Naismith to invent a game?
A．Some students B．Some teachers C．Some students' parents D．Some of his friends
【小题4】When a student ______ , he makes a score.
A．receives the ball.
B．throws the ball to another student
C．runs quickly with the ball in his hand
D．throws the ball into the basket
【小题5】Which sentence is right?
A．Dr. Naismith had to use fruit baskets to throw the ball.
B．It was easy to invent the game.
C．The students could go outdoors when the weather was bad.
D．The ball had to be thrown into the basket ten feet above the floor.
六、根据句意填空
单词拼写
41．If you can swim a the river, I’ll be waiting for you on the other side.
42．She took part in helping people in the Wenchuan Earthquake. She would never forget this unusual .
43．I like c with my friends online very much.
44．In Lily’s paper there are f mistakes than in Jack’s.
45．I read my essay a in class and everyone can hear me clearly. 46．His speech was boring, but he did not r it.
47．He is good at thinking. I think he can answer the question in a d way.
48．Would you mind not w your time?
49．Don’t stay up late, or you will feel s in class during the day.
50．He joined the army(军队) five years ago, so he has been a s for
five years.
七、话题作文
51．书面表达
昨天，你班就“你愿意做班干部吗？”的话题开展了一次讨论，结果见下表。请你根据表
格内容用英语写一篇短文，并谈谈你的看法。
注意：1. 文章必须包括表格中的全部内容，可适当增加细节；
2.文章开头已给出，不计入总词数，只需接着写；
3. 词数：80—100个。
Will you be the leader of your class?
Yesterday, our class discussed whether you would be the leader of your
class.______________________________________________________________________
____
___________________________________________________________________________
____
___________________________________________________________________________ ____
___________________________________________________________________________ ____
___________________________________________________________________________ ____
___________________________________________________________________________ ____
_________________________________________________________________________
参考答案
1．A
【解析】
试题分析：Since自从……以来；Before 在……之前；Until直到；When当……时。句意：你的日语这么好。你在日本多久了？结合语境可知选A，自从我五岁以来。
考点：连词辨析
点评：连词在句子中主要起联系上下文的作用，他们之间的区别就是表示逻辑关系的不同，所以在解题时先要理解上下文含义，然后根据上下文逻辑关系选择合适的连词。连词的用法都比较多，语义之间还有交叉，熟记其基本应用规则，了解其区别，注意固定搭配对象，是做好此类题型的关键。
2．A
【解析】
试题分析：句意：他的叔叔现在已经去了纽约，他已经去过那里两次。他明天就会回来。结合语境可知前文强调的是现在已经完成的动作，故用瞬间动词。下文强调的是已完成的某种状态，故用持续性动词be，选A。
考点：完成时态中动词用法
点评：完成时态中的动词有瞬间动词和持续性动词之分，瞬间动词的过去分词强调的是动作的完成，持续性动词强调的是动作的持续性。现在完成时态中表示一段时间的时间状语不能和瞬间动词连用，持续性动词不能和表示瞬间时间的时间状语连用，需注意区分。
3．A
【解析】
试题分析：句意：在晚上，我们可以在大街的两边看到彩灯。结合语境可知用复数名词sides，选A。
考点：词义辨析
点评：该题型是属于英语考试的基础题型，是必考内容。英语单词同汉语一样具有一词多义，一词多性的特点。解答此类问题首先要理解每个选项的基本含义，并注意交叉含义间的区别，了解其特殊用法，然后结合语境选择正确答案。
4．B
【解析】
试题分析：in在一个范围；at在一点；to到，向；of关于，……的。电话号码属于数目上
的一点，联系下文354—6403，可知选B。
考点：介词辨析
点评：英语介词的一个特点是一词多义，并且介词间语义交叉现象很多，习惯用法也很多，有时很难从词义上区分开来。故学习中要注意不断总结，熟记一些介词和动词的固定搭配用法及习惯用法，是完成此类问题的捷径。
5．C
【解析】
试题分析：句意：吃太多的糖对你的健康不好。动名词作主语表示抽象动作，to到，向；for为了，对于。结合语境可知选C。
考点：非谓语动词及介词辨析
点评：动名词作句子成分往往表示抽象的，反复发生的动作。原形动词不能充当主语，宾语等句子成分。英语介词的一个特点是一词多义，并且介词间语义交叉现象很多，习惯用法也很多，有时很难从词义上区分开来。故学习中要注意不断总结，熟记一些介词和动词的固定搭配用法及习惯用法，是完成此类问题的捷径。
6．B
【解析】
试题分析：pollution 名词，污染；pollute动词，污染；polluted形容词，受污染的。句意：这条河中的水有害，因为它是一条被污染了的河。
考点：词义辨析
点评：该题型是属于英语考试的基础题型，是必考内容。英语单词同汉语一样具有一词多义，一词多性的特点。解答此类问题首先要理解每个选项的基本含义，并注意交叉含义间的区别，了解其特殊用法，然后结合语境选择正确答案。
7．A
【解析】
试题分析：leave for动身去；leave to留给，交托。句意：我们下周要动身去北京。英语中表示移动位移的动词的现在进行时态可以表示将来的动作，结合语境可知选A。
考点：短语辨析及时态辨析
点评：解答此类题型的要点是了解各个短语的基本含义及用法的不同，同时注意其表示多个含义的现象，然后结合语境选择合适答案。英语中的时态主要是借助于时间状语与上下文语境来进行判断。解答此类题型，首先要注意句子中的时间状语，如果没有则要通过分析上下
文，结合语境来判断句子的时态。
8．A
【解析】
试题分析：句意：夏天的天气怎么样？固定句式What’s the weather like……，……的天气怎么样？故选A。
考点：固定句式
点评：固定句式的考查也是英语考查的一个重点，熟记这些句式可以减少答题中的分析判断时间，所以平时加强句式记忆也是学好英语的关键环节。
9．D
【解析】
试题分析：and 和，并且；or或者，否则；so 因此；but但是。句意：这家医院是新的，但是非常脏。结合语境可知上下文是转折关系，故选D。
考点：连词辨析
点评：连词在句子中主要起联系上下文的作用，他们之间的区别就是表示逻辑关系的不同，所以在解题时先要理解上下文含义，然后根据上下文逻辑关系选择合适的连词。连词的用法都比较多，语义之间还有交叉，熟记其基本应用规则，了解其区别，注意固定搭配对象，是做好此类题型的关键。
10．A
【解析】
试题分析：句意：我的哥哥总是第一个到校。Reach是及物动词，后面直接接宾语。固定式作表语补足语表示具体的将要进行的动作，结合语境可知选A。
考点：非谓语动词及动词辨析
点评：不定式作句子成分表示具体的将要进行的动作，一般不用于介词后面。动名词作句子成分往往表示抽象的，反复发生的动作。介词后面一般接动名词作宾语，也有部分动词后接动名词做宾语，注意和不定式作宾语表达含义的不同。英语动词同汉语一样具有一词多义，一词多性的特点。解答此类问题首先要理解每个单词的基本含义，并注意交叉含义间的区别，了解其特殊用法及习惯搭配等特点，然后结合语境选择正确答案。
11．C
【解析】
试题分析：句意：吉姆说过这本书非常有趣。结合语境可知从句描述的是过去的状态，故谓
语动词用一般过去式，选C。
考点：从句中的时态
点评：英语宾语从句的时态和主句没有必然的联系，需结合语境进行具体分析。而英语状语从句的时态与主句有比较紧密的联系，若主句为一般将来时，时间和条件状语从句通常要用一般现在时表示将来，而不能直接使用将来时态。
12．D
【解析】
试题分析：since自从……以来；after在……之后；as soon as 以……就；so that以便，所以。句意：快点，亲爱的。我们必须在11:45前赶到车站，以便于我们能赶上十二点的火车。结合语境可知选D。
考点：连词辨析
点评：连词在句子中主要起联系上下文的作用，他们之间的区别就是表示逻辑关系的不同，所以在解题时先要理解上下文含义，然后根据上下文逻辑关系选择合适的连词。连词的用法都比较多，语义之间还有交叉，熟记其基本应用规则，了解其区别，注意固定搭配对象，是做好此类题型的关键。
13．C
【解析】
试题分析：句意：你的哥哥的工作是什么？job工作，可数名词，结合语境可知本句用复数形式，故选C。
考点：名词的数
点评：英语中名词有可数名词与不可数名词之分，可数名词又有单复数之分，当可数名词的数量不是一个时，要变成复数形式，其构成规则也比较复杂，需要不断总结记忆。不可数名词大多是一些物质名词和抽象名词，没有数的变化，需要注意的是，一些在汉语中明显可数的名词，在英语中往往不可数，也需要加以总结，注意了解中西文化的差别，不能以中式思维思考英语问题。
14．D
【解析】试题分析：There be句型表示“某地(或某时)存在有某人(或某物)，而并非某地(某人、某物或某时)拥有什么东西”，句中有若干个名词作主语，动词be常与后面主语中的第一个名词在数上一致。have一般表示某人有某物。句意：这个家庭有一个母亲，一个父亲和三个孩子。根据谓语后面第一个名词a mother，单数，可知选D。
考点：there be句型就近原则
点评：There be句型表示“某地(或某时)存在有某人(或某物)，而并非某地(某人、某物或某时)拥有什么东西”，其实质是倒装句，其谓语动词就近原则是常考内容，注意基本规则就行。15．B
【解析】
试题分析：句意为：---迈克最近取得了很大进步。---确实是这样，你也是。“so+be动词（助动词、情态动词）+主语” 表示前面所叙述的事实也适合于另一个人，“也”之意。“so+主语
+be动词（助动词、情态动词）”表示肯定前面所叙述的是事实，“确实如此”之意。根据语
境并结合选项可知应选C。
考点：考查固定句型结构的用法辨析。
16．A
17．B
18．A
19．C
20．B
21．B
22．A
23．D
24．C
25．B
26．A
27．D
28．D
29．C
30．D
【分析】
这篇短文主要介绍了音乐与人们行为之间的关系，告诉我们音乐可以影响我们的行为的方式。16．因为从后面的句子可以看出，这段话的话题就是“music”。选A。
17．后面提到意外的情况“在办公室和农场听到音乐”，因此这里要用意思为“甚至”的副词
“even”。选B。
18．这里表达的意思是“音乐改变人的行为方式”，因此，这里要用意思为“方式”的名词“way”。选A。
19．这里的意思是“西方古典音乐使人感觉自己好像比实际上更有钱”的意思，因此，这里要用意思为“感觉”的动词“feel”。选C。
20．既然“古典音乐让人感觉自己有钱”，自然会使人花钱更多，因此，这里要用意思为“更多”的形容词“more”。选B。
21．与古典音乐相对应的是现代音乐。因为“古典音乐使人多花钱”，现代音乐自然会使人花钱更少些，选B。
22．这句话的意思是“如果完全不播音乐，人们花的钱甚至更少。”因此，这里要用意思为“没有”的形容词“no”。选A。
23．因为前面讲的这些都是科学家们“相信”的事情，这里自然也是科学家“相信”的事情。而且，前文有“Scientists believe”，而这里又有“Scientists also”，后面自然也是“believe”。选D。24．本文一直讲的是人们在饭店吃饭时听到饭店里播放的音乐时的反应，这句讲的是“当音乐播放得更快时”人们的反应，那自然是“吃得更快”，因此，这里要用表示“吃”的动词“eat”。选C。
25．饭店客人太多，工作人员忙不过来的时候，常常会播放节奏欢快的音乐，以催促顾客快点吃完走人。因此，这里要用表示“忙碌”的形容词“busy”。选B
26．考查情态动词;饭店可以多挣钱，选A。
27．这个空格只是一个引导后面的宾语从句的引导词，没有实际意思，因此，要用“that”。选D。
28．从后面一句可以看出，这句的意思是“当人们放松的时候，其学习效果更好。”因此，这里要用一个意思为“放松”的过去分词或形容词“relaxed”。选D。
29．这最后一段是一个提醒：下一次在哪里听到音乐的时候一定得小心，因此音乐可能会改变的行为习惯。因此，这里要填意思为“下一次”的形容词“next”，选C。
30．而后一句自然要填意思为“小心”的形容词“careful”了。选D。
31．C
32．D
33．A
【解析】
试题分析：这篇短文简要的介绍了美国著名歌星——迈克尔杰克逊的一生。
31．根据短文第一段In 1970 the group made their first record the name of “I Want You Back”.描述，可知选C。
32．根据第二段Michael was good at dancing as well as singing, for example, his dance moves and moon walking.描述，可知选D。
33．根据短文最后一段Michael nearly didn’t go out because he was too famous.描述，可知选A。
考点：传记类记述文阅读
点评：本文浅显易懂，层次分明，学生很容易把握文章中心内容。答题中注意带着问题阅读短文，一般就能顺利找出答题依据，完成较易。
34．
【小题1】C
【小题2】A
【小题3】B
【小题4】D
【小题5】D
【解析】
试题分析：这是一篇关于在芝加哥旅行的旅行指南，文中告诉了我们怎样能够更好地享受我们的旅行，以及怎样能省钱。
【小题1】根据How to have fun in Chicago without spending a lot of money?及下文描述，可知本文主要是是告诉我们如何在芝加哥作一次便宜的旅行。故选C。
【小题2】根据The Art Institute of Chicago has a fine collection of photos and paintings. The ticket is ＄10.00,but go on Tuesdays and you’ll get in free(免费).描述，可知选A。
【小题3】根据The Sears Tower is the world’s third tallest building. By going to the 103rd floor, you can get a great view of the whole city!描述，可知选B。
【小题4】根据最后一段However, you can get a room in the dormitory(宿舍) at Roosevelt University for ＄215 for a whole week! But you have to stay for 30 days to get this great rate(优惠).计算可知30天大约是四周，215*4=860，故选D。
【小题5】根据For The Oprah Winfrey Show you’ll have to book tickets at least a month before.描述，可知选项D，描述错误。
考点：关于在芝加哥旅行的说明文阅读
点评：本文浅显易懂，各个小题都能在文中找到适当依据。只要认真阅读短文，注意前后联系，就能顺利完成阅读。文章所设试题主要考察细节查找，做题关键是找出原文的根据，认真核查小题和原文的异同。对于有关数字的问题，要认真分析，并进行必要的计算。
35．A
36．B
37．A
38．D
39．C
【解析】
试题分析：这篇短文主要介绍了竹子的生长特性及竹子的主要用途。
35．根据Like other kinds of grass, a bamboo plant may be cut very low to the ground, but it will grow back very quickly.描述，可知选A。
36．根据Bamboo grows almost everywhere in the world except Europe. 描述，可知选B。
37．根据最后一段In Africa, poor farmers are taught how to find water using bamboo. These African countries need cheap way to find water because they have no money,描述，可知选A。
38．根据Bamboo pipes( 管子) help poor farmers bring water to their thirsty fields 描述，可知选D。
39．根据Many Asian countries have used bamboo for hundreds of years.描述，可知选C。
考点：关于竹子的说明文阅读
点评：本文浅显易懂，层次分明，学生很容易把握文章中心内容。答题中注意带着问题阅读短文，一般就能顺利找出答题依据，完成较易。
40．
【小题1】B
【小题2】C
【小题3】B
【小题4】D
【小题5】D
【解析】
试题分析：这篇短文主要描述了篮球的产生历史及篮球的积分规则。
【小题1】根据It’s over a hundred years old .可知选B。
【小题2】根据As they cou ldn’t play outdoors , they were unhappy ,可知选C。【小题3】根据Some of the teachers at the college asked Dr Naismith to invent a game so that the students might have something to play with. 可知选B。
【小题4】根据To make a score, the ball had to be thrown into the basket ten feet (英尺)above the floor on the wall.可知选D。
【小题5】根据To make a score, the ball had to be thrown into the basket ten feet (英尺)above the floor on the wall.可知选D。
考点：关于篮球历史的说明文
点评：本文浅显易懂，各个小题都能在文中找到适当依据。只要认真阅读短文，注意前后联系，就能顺利完成阅读。文章所设试题主要考察细节查找，做题关键是找出原文的根据，认真核查小题和原文的异同。
41．across
42．experience
43．chatting
44．fewer
45．aloud
46．realize
47．different
48．wasting
49．sleepy
50．soldier
【解析】
试题分析：
41．句意：如果你能游过这条河，我会在另一边等你。结合语境及首字母可知填介词across，横穿。
42．句意：她参与了救助汶川地震中的人们。她永远不会忘记这次不同寻常的经历。结合语境可知填单数名词experience，经历。
43．句意：我非常喜欢和我的朋友们在网上聊天。动名词作宾语，表示抽象动作，结合语境及首字母可知填动名词chatting，聊天，作宾语。
44．句意：在丽丽的试卷上错误比杰克的少。结合语境及首字母可知填形容词的比较级fewer，更少的，做定语。
45．句意：在班上，我大声地读我的论文，每个人都能清楚地听到。结合语境及首字母可知填副词aloud，大声地，做状语。
46．句意：他的演讲很无聊，但是他并没有意识到。结合语境及首字母可知填原形动词realize，意识到。
47．句意：他很善于思考。我认为他能以不同的方式回答这个问题。结合语境及首字母可知填形容词different，不同的，作定语。
48．句意：你介意不浪费你的时间吗？动名词作宾语表示抽象动作，结合语境及首字母可知填动名词wasting，浪费，作宾语。
49．句意：不要熬夜到很晚，否则在白天课堂上你会感到困乏。结合语境及首字母可知填形容词sleepy，欲睡的，困乏的，作表语。
50．句意：他在五年前加入了军队，因此他已成为一名战士五年了。结合语境及首字母可知填单数名词soldier，战士，作宾语。
考点：词汇基础及词形变化
点评：解答此类题型首先要根据句子中的关键信息，如：首字母，汉语提示，上下文，句意等。判断出所需单词。然后根据该单词在句子中的句子成分，所起作用，确定单词词形，进行适当词形变化。
51．略
【解析】
试题分析：本文的写作分三部分构成，首先对绝大多数的同学认为当班干部能够帮助老师，为同学服务（help teacher do something,service students）同时可以提高交际能力（improve the ability to communicate with others），对以后的学习生活都是有益的（be beneficial to the future