题目
题型:不详难度:来源:
Antifreeze is a liquid(液体) that is added to water to keep it from freezing. When water freezes and turns to ice,it expands(膨胀).The force of water expanding is so great that it will break the hardest metal.Water is used in car engines(发动机) to keep them cool while they run,and if this water is allowed to freeze in winter it can break the iron block of the engine.That is why antifreeze is necessary.
Water freezes at 0℃;the usual kind of antifreeze will not freeze until the temperature is-40℃.A mixture(混合物) of five parts of water and four parts of antifreeze will prevent freezing at-18℃;four parts of water and five parts of antifreeze reduce this to -22℃.
Alcohol is a kind of good antifreeze,but when the air is running it becomes hot and the alcohol boils away,so it must be changed very often.Most people use antifreeze that does not boil away when the engine is running.There are several chemicals that do this.One of the most popular is called ethylene glycol.
小题1:people use ________ to keep car engines cool.
A.antifreeze | B.water | C.alcohol | D.ethylene glycol. |
A.0℃ | B.-18℃ | C.-22℃ | D.-40℃ |
A.keep alcohol in water |
B.stop ice from becoming water |
C.make the freezing point of water lower |
D.raise the freezing point of water |
A.water | B.ethylene glycol | C.any chemical | D.any mixture |
A.tell us what antifreeze is |
B.make people buy antifreeze |
C.tell us that cars need antifreeze |
D.show us how to protect car engines |
答案
小题1:B
小题2:D
小题3:C
小题4:B
小题5:A
解析
小题1:细节理解题。根据文章第一段三,四两行可知。
小题2:细节理解题。根据文章第一段倒数第三行,四行可知。
小题3:细节理解题。根据文章第一段倒数一二两行可知。
小题4:细节理解题。根据文章最后一段最后一句可知。
小题5:主旨大意题。这篇文章主要讲述的是什么是防冻液以及为什么会使用防冻液。
核心考点
试题【Antifreeze is a liquid(液体) that is added to water to keep it from freezing. When】;主要考察你对教育文化类等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200120/20200120060634-52673.png)
If the rose can be said to be a special flower, then the apple can be said to be a special fruit.It is very important in American culture.American stories speak of Johnny Appleseed, who went throughout America collecting apple seeds and planting apple trees.He had a great love for nature and went through fields and farms adding richness and beauty to the country.
One of the first sayings taught to school children is, “An apple a day keeps the doctor away.” This short saying encourages children to eat fresh fruit to keep healthy. If someone always says good words to a person, people will call him an “apple polisher”.This, however, is not a good name.If someone is very dear to us, we say that he or she is the “apple of our eye”.
Most people believe that the fruit which Eve gave to Adam was an apple, even though the Bible (圣经) never says so.The apple, therefore, is a deep part of the language and stories of America.
An apple is also delicious.Apples can be cooked in many ways, used as a dessert, and made into sweet juice.
In many parts of the country during the harvest season, a popular activity is to go into an apple garden to pick apples.Washington, D.C.and New York are both famous for their apples.
Finally, when it’s time to take a vacation to American cities, one can always visit New York, which is “the biggest apple” of all the American cities.
小题1:During these years, iphones are popular with the people all over the world. Which country is his starter--Steven Paul Jobs from?
A.America | B.England | C.Russia | D.Japan |
A.He had a great love of nature. |
B.He liked the American people. |
C.He went throughout the country. |
D.He collected apple seeds and planted apple trees. |
A.Something for cutting apples. |
B.A person who likes to please others. |
C.A person who is dealing with fruits. |
D.A machine for cleaning apples quickly. |
A.Apples are medicine. |
B.Apples are the most important food. |
C.New York is famous for its big apples. |
D.The Bible says Adam was given an apple. |
A.apples in American culture |
B.stories about the apple |
C.some famous sayings of the apple |
D.big cities that are famous for apples |
Passage 1
Do you always understand directions on a bottle of medicine? Do you know what is meant by “Take only as directed”? Read the following directions and see if you understand them.
“To reduce pain, take two tablets (药片) with water, followed by one tablet every eight hours, as required. For night-time and early morning relief (减缓疼痛) take two tablets at bedtime. Do not take more than six tablets in twenty-four hours.
For children of six t twelve years old, give half the amount (量). For children under six years old, ask your doctor’s advice.
Reduce the amount if you suffer from restlessness or sleeplessness after taking the medicine.
小题1:How many tablets at most can a person over 12 have in 24 hours?
A.Three | B.Four | C.Six | D.Eight |
A.Half a tablet | B.One tablet | C.Two tablets | D.Four tablets |
A.Stop taking the medicine at bedtime. | B.Continue to take the normal amount |
C.Take more than the normal amount | D.Take less than the normal amount |
A.helps you to fall asleep quickly | B.may be dangerous to small children |
C.cannot be taken if one feels sleepy | D.should not be taken by kids under 6 |
A.textbook | B.newsreel | C.doctor’s notebook | D.bottle of medicine |
Passage 2
When you get tired of homework, several minutes’ walk in a nearby green park helps you relax at once. Or you may stand facing the lake or the seas. They will calm (not to be excited or nervous) you just like the green plants.
Wonder why? Color is a key part of the answers. Since it is so, green and blue help make people feel more quiet and safe.
All colors have special power. Scientists have found that many colors have specific effects (效果) on people’s mind and feelings.
Try an easy and interesting experiment and you’ll see how color “mislead” you sometimes. Wrap (包装) two boxes of the same size with colored paper, one red and the other white. Then weigh the two boxes with your hands. Which one is heavier? Most people will think that the red box is heavier, even though they weigh the same.
Colors can affect (影响) learning. Scientists have found that students spend more time reading if they read information written in blue text. Blue helps most people calm down and think more.
Clever uses of colors in daily life are to be seen everywhere. Hospitals and libraries seldom paint their walls, tables and desks red. They use light colors, like light blue or green. Red makes people excited while light colors help them relax. Haven’t worked out how color affects your daily life? Start with your small room. Try to make some changes in it and you’ll get to know how important color is!
小题1:The underlined word “mislead” means _____.
A.affects | B.effects |
C.causes someone to have a wrong idea | D.give wrong directions |
A.light blue or light green | B.deep red or deep brown |
C.deep orange or deep red | D.light green or light yellow |
A.weigh something with your hands | B.study attentively |
C.face the lake or the sea | D.enjoy some rock music |
A.When you are going to have a rest, you’d better sit in the room painted green |
B.Scientists have known some differences among some colors |
C.When you get tired of homework, you should look at the green plants far away |
D.The passage has told us clearly why some colors are warm and other colors are cool. |
A.the difference between red and blue |
B.how to get on well with others |
C.how to make smart uses of different colors in our daily life |
D.how to paint and decorate our rooms |
Canada is one of the best places in the world for a skiing(滑雪) vacation. Here are some good resorts(胜地) for skiing in Canada.
Canmore, one of the best resorts, is in Alberta, Canada. It is cheap and you can also stay in the National Park.
Another great place is Marmot Basin. This beautiful ski resort is also in Alberta. It’s one of the least crowded ski resorts in North America. 71. You can spend more time on the slopes(斜坡) and don’t need to wait to go back up the mountain.
Mount Tremblant Resort is in the beautiful Laurentian Mountains. It has a beautiful village(乡村), with a lot to see and do. This is a great place to enjoy winter and skiing.
Kicking Horse Mountain Resort is a four-season(季节) mountain resort. It is in the Canadian Rockies. You can enjoy skiing and sightseeing during the day and relax in the quiet hotel during the evening.
Have a look at these places before planning your skiing vacation. You are sure to find one you like.
(一)根据短文内容,回答下列各题。
小题1:How many places for skiing in Canada are mentioned(提到) in this passage?
_________________________________________________________________
小题2:Which two ski resorts are in Alberta?
_________________________________________________________________
(二)将文中划线的句子译成汉语。
小题3:_____________________________________________________________
(三)给短文拟一个合适的标题。
小题4:_____________________________________________________________
小题1:People can live longer than in the past.It’s because _______.
A.medical technology develops | B.we have big hospitals |
C.there are many good doctors | D.both B and C |
A.the doctors | B.the surroundings |
C.his or her family | D.the patient himself or herself |
A.death is better than life | B.1ife is better than death |
C.neither life nor death is good | D.none of the above |
A.the doctors are not good | B.the conditions are bad |
C.life is too hard | D.they are seriously ill |
最新试题
- 1(8分)在加热的条件下,用MnO2与100mL物质的量浓度为12mol/L的浓盐酸反应,制得氯气2.24L(标准状况)。
- 2下列加点词语使用正确的一项是A.在CBA赛场,易建联靠投篮和身体素质就能挥洒自如,但在NBA赛场,易建联身体上总还不如对
- 3二氧化硫(SO2)在通常情况下是一种无色、有刺激性气味的有毒气体,它能与氢氧化钠溶液反应生成盐与水.现有某探究实验小组欲
- 4(本小题满分12分)已知函数 ,且函数与的图像关于直线对称,又 , .(Ⅰ) 求的值域;(Ⅱ) 是否存在实数m,使得命题
- 5某烷烃的结构简式为.有甲、乙、丙、丁四个同学将其命名依次为:2,2二甲基-4乙基戊烷;3,5,5三甲基己烷;4,4二甲基
- 6直线y=x-6与x轴、y轴分别交于点A、B,点E从B点,出发以每秒1个单位的速度沿线段BO向O点移动(与B、O点不重合)
- 7给文言文中画横线的句子断句。 靖郭君将城薛,客多以谏。靖郭君谓谒者:“无为客通。”齐人有请者曰:“臣请三言而已矣!益一言
- 8维护国家统一和民族团结是人心所向,制造民族分裂不得人心。这是因为,国家统一和民族团结是我国 [ ]A.处理民族关
- 9“中国加入世贸,就好像一个昏庸短见的守财奴,把自己的清白闺女嫁给了土匪。结果,土匪根本就没有把岳父当人看……还要赔上23
- 10若方程2x-m=4x-3+m的解为非正数,则m的取值范围 [ ]A.m>B.m≥C.m< D
热门考点
- 1根据中国现代国情,党和政府在某些地区实行了特殊的政策,特别行政区、民族自治区、经济特区的共同点是 ( )
- 2如图,某个反比例函数的图象经过点P,则它的解析式为( )A.y=1x(x>0)B.y=-1x(x>0)C.y=1x(x
- 3下列词语解释不正确的一项是[ ]A.明察秋毫:这里比喻最细微的事物。B.怡然自得:安适、愉快的样子。C.徐喷以烟
- 4蜜蜂、蜘蛛、蜈蚣、沼虾它们所共同具有的特征是:体表都具有外骨骼;______;______.有人说在蜜蜂的群体中,所有的
- 5时下,很多学生带手机上学。为此,某英语报在你校组织了一场讨论。讨论的主题:中学生是否有必要带手机去学校。请你根据下表提供
- 6目前,汽车尾气已成为许多大城市空气的主要污染源.汽车尾气中含有CO和NO等多种污染物.(1)汽车燃料中一般不含氮元素,尾
- 7“低碳生活”理念已进入寻常百姓脑海中,这是因为大气中的二氧化碳年度逐渐增加,“温室效应”越来越危及地球,以下哪一因素与二
- 8请用所给词的适当形式填空。1. —Do you enjoy _________(you) in the park?
- 9小题1:____________(从那天起), I never spoke to him again.小题2:He ma
- 10在研究新航路开辟的原因时,有学生提出《马可·波罗行记》在历史上可能是不存在的。如果这一著作是虚构的,有可能是下列哪一因素