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题目
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It seems to be strange to you that there is a blind spot (盲点)on the eyes. Here is an interesting experiment (实验) that can make something disappear, when one eye is open.
Make a card about the size of a postcard and write two English letters L and R on it, L on the left and R on the right. First, hold the card about 80 cm away and you see both the letters. Then close your right eye and look at the letter R only with your left eye. And now, as you move the card slowly towards you, you’ll find the letter L disappearing. But if you move the card nearer to your face, the letter will be seen again. Now do the same experiment with your left eye closed, you’ll find the letter R disappearing.
Why does the letter disappear? It is because there is a blind spot on the eyes. When the image (影像) of the letter falls on the blind spot, it won’t be seen. That is why either of the letters disappears.
小题1:The writer of the passage thinks that ________ there is a blind spot on the eyes.
A.few people know
B.no one knows
C.most people know
D.all the people know
小题2:The word “disappear” in the passage means ________ in Chinese.
A.出现B.远离C.消失D.靠近
小题3:You fail to see the letter L in the experiment because ________.
A.your eyes are poor
B.its image falls on the blind spot
C.your left eye is not open
D.you move it close to your eye
小题4:In which order (顺序) should you do the experiment?
①Hold the card
②Move the card nearer
③Close your right eye
④Write two English letters
⑤Look at the letter R
⑥Make a card
A.④⑥①②③⑤B.①③⑥④⑤②
C.⑥①④③②⑤D.⑥④①③⑤②
小题5:The passage mainly (主要) tells us ________.
A.the blind spot can move
B.an interesting experiment
C.where the blind spot is
D.there is a blind spot on the eyes

答案

小题1:A
小题2:C
小题3:B
小题4:D
小题5:D
解析
试题分析:这篇短文作者通过一个实验,告诉了我们在我们的眼睛上有一个盲点,并重点解释了造成这一现象的原因。
试题分析:
小题1:根据第一段It seems to be strange to you that there is a blind spot (盲点)on the eyes.描述,可知很少有人知道眼睛上劝盲点。故选A。
小题2:联系下文描述,可知此处指的是让某物消失,故选C。
小题3:根据最后一段When the image (影像) of the letter falls on the blind spot, it won’t be seen.描述,可知选B。
小题4:根据短文第二段描述,可知选D。
小题5:这篇短文主要告诉了我们在我们的眼睛上有一个盲点,故选D。
点评:本文中长句较多,一时很难读懂句子含义,注意多读几遍,不要强求非得理解一词一句的含义,能把握文章大意就行。然后带着问题阅读短文,一般就能顺利找出答题依据。对于不能直接找到根据的问题注意联系上下文,根据短文中心总结出正确答案。
核心考点
试题【It seems to be strange to you that there is a blind spot (盲点)on the eyes. Here i】;主要考察你对科普环保类等知识点的理解。[详细]
举一反三
阅读表达
阅读短文,根据要求完成下面各小题。
According to a new survey, students’ safety has become a big problem. Nearly 50% of students say they are worried about robbery on the way to and from school. Now in many big cities in China, some schools have taught an unusual lesson: self-protection. Students like this lesson because there are no exams or boring classes. 77① _____________Chen Haoyu, a teacher at Beijing No. 25 Middle School, gives young students advice on how they should deal with danger.
If you are robbed
Keep calm. If you cannot cry for help or run away, give the robber your money. Try to remember what the robber looks like and tell the police later.
If you are in a traffic accident
If a car hurts you, you should remember the car number. If it is a bicycle, try to call your parents before you let the rider go. 77②_____________.
If it is raining hard and there is lightning
Don’t stay in high places and stay away from trees.
When there is a fire
Get away as fast as you can. Put wet things on your body and try to find an exit. Do not take the lift.
If someone is drowning
If you can’t swim, don’t get into the water. Cry out for help.
78 Remember that danger is never as far away as you think. Take care of yourself at all times!
小题1:How many suggestions for dealing with danger did Chen Haoyu give?
_________________________________________
小题2:请从A、B、C中为77①、②选择合适的选项,并将其字母序号分别填在下面的横线上。
A. This is because you don’t know how seriously you are hurt.
B. It is important to protect you from being hurt.
C. And they can learn how to save lives and know how to stop danger before it really happens.
① _____ ② _____
小题3:请把划线部分的句子翻译成汉语。
______________________________________________________________
小题4:What should you do when there is a fire?
_____________________________________________________________
小题5:请为本文拟一个合适的标题。
______________________________________________________________
题型:不详难度:| 查看答案


We all enjoy the beautiful show of colours as leaves change each autumn. But did you ever wonder how and why this happens?
Leaves are nature’s food factories. Plants take water from the ground through their roots and take carbon dioxide (二氧化碳) from the air. Plants use sunlight to turn water and carbon dioxide into glucose (葡萄糖). Glucose is a kind of sugar, which plants use as food for energy and growing.
The way plants turn water and carbon dioxide into sugar is called photosynthesis that means “ putting together with light”. A chemical called chlorophyll helps photosynthesis. It gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.
During winter, there is not enough light or water for photosynthesis. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories.
As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves. Small amounts of these colours have been in the leaves all along. We just can’t see them in the summer, because they are covered up by the green chlorophyll.
The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples (枫树), glucose is caught in the leaves after photosynthesis stops. Sunlight and the cool nights of autumn turn this glucose into a red colour. The brown colour of trees like oaks (橡树) is made from waste left in the leaves.
It is the mixture of all these things that makes the beautiful colours we enjoy during autumn.
小题1:The word “chlorophyll” in the third paragraph means _______ in Chinese.
A.叶绿素B.氧气C.胡萝卜素D.蛋白质
小题2:The leaves of the trees in autumn turn yellow because of the short of _____.
A.water and carbon dioxide
B.glucose and energy
C.sunlight and water
D.sunlight and carbon dioxide
小题3:The way that _______________________ is called Photosynthesis .
A.plants change water and carbon dioxide into sugar
B.plants turn water and carbon dioxide into sugar with the help of sunlight
C.plants use glucose as food for energy and growing
D.chlorophyll is a great help
小题4:Which of the following is NOT true?
A.When autumn and winter come, the days get shorter and shorter.
B.During winter trees rest and live on the food they store during the summer.
C.During winter small amounts of yellow and orange colours are kept in the leaves all the time.
D.Trees begin to stop making food in summer.
小题5:This passage tells us __________________.
A.all the plants can grow well with the strong sunlight
B.there are all kinds of plants on the earth
C.all the colours of the leaves aren’t made from chlorophyll
D.maples and oaks have the same reason as other trees for the change of colours

题型:不详难度:| 查看答案
完形填空 先通读下面的短文,掌握其大意,然后在所给选项中,选出最佳选项。
At the beginning of this century, medical scientists made an interesting discovery: we are built not just of flesh (肌肉) and blood but also of time. They were able to show that we all have a ‘body clock’   1  us, which controls the   2  and fall of our body energies. It can   3  us different from one day to the next.
The idea of a ‘body clock’ should not be too   4  because the lives of most living things are controlled by the 24-hour night-and-day cycle (循环). We feel   5  and fall asleep at night. We become   6  and energetic during the day. Most people will have a bad feeling if the 24-hour cycle is   7 . For example, people who are not used to working at night can find that lack (缺少) of sleep causes them to  8  badly at work.
  9  the daily cycle of sleeping and waking, we also have other cycle which lasts longer than one day. Most of us would   10  that we feel good on some days and not so good on others; sometimes our ideas seem to be so active and at other times, they are not.
小题1:
A.besideB.inside C.outsideD.under
小题2:
A.lifeB.offer C.useD.rise
小题3:
A.show B.treatC.make D.change
小题4:
A.difficult B.naturalC.surprising D.frightening
小题5:
A.quiet B.tired C.comfortableD.cheerful
小题6:
A.regular B.seriousC.lively D.clear
小题7:
A.disturbed B.pushed C.restarted D.troubled
小题8:
A.perform B.suffer C.count D.control
小题9:
A.With B.As well as C.Except D.Rather than
小题10:
A.afford B.admire C.advise D.agree

题型:不详难度:| 查看答案
Frogs are animals that can live both in water and on land. There are more than 5,000 kinds of frogs on the earth. The earliest known frogs lived about 190 million years ago and the frogs today still look the same. Here are some fun things that you might not know about frogs. Enjoy!
The Biggest and the Smallest Frogs
Some frogs can be very big. The biggest kind of frog is the Goliath Frog in West Africa. Its body can be nearly 30cm long, about the size of a large cat. The Gold Frog and the Poison Frog are the smallest frogs in the world. They are less than 1cm long. Though the Poison Frog is very small, it is not weak at all. It is dangerous. Any animal that eats it will die very soon.
The Best Jumpers
Frogs are very good at jumping. They developed jumping legs so that they would not be eaten by other large animals. Using their big strong legs, more frogs can jump over 20 times their own length. The Australian Rocket Frog can even jump over 2m, which is 50 times its body length (5.5 cm). That might be the reason why frogs are called the best jumpers on the earth.
The Cryogenic Animal
Some frogs like the Common Wood Frog have a special ability to live in very cold places. When the temperature goes down, they become ice frogs. 2/3of their body water freezes. Their hearts stop, and their breathing stops too. You may think they are dead, but in fact they are not. Maybe we humans can learn the way that the frogs do for medical purpose.
小题1:The earliest frogs lived about          million years ago.
A.20
B.30
C.50
D.190
小题2:      can jump over 2m.
A.The Goliath Frog
B.The Common Wood Frog
C.The Poison Frog
D.The Australian Rocket Frog
小题3:What will happen to a Common Wood Frog at very low temperature?
A.It will die very soon.
B.It will be an ice frog.
C.It will become dangerous.
D.It will become very small.

题型:不详难度:| 查看答案
Bend over, take a deep breath and drink some water!This is just one of hundreds of pieces of advice you might get if you have the hiccups(打嗝).Hiccups are so mysterious(神秘的).We really don’t know why they start and why they stop.
Everyone has a favorite cure for a case of the hiccups.Some people think that a good scare is necessary to get well.Others eat a little sugar.Still others drink a glass of water with a knife in it.
An American man named Jack O’Leary said that he had hiccupped 160 million times over a period of eight years.He tried 60,000 cures,but none of them worked.Finally he prayed(向…祈祷) to Saint Jude, the saint of Hopeless cases, and his hiccupping stopped immediately.
A British worker didn’t stop his hiccups until eight months later. People from all over the world wrote him letters with suggestions for getting well.He tried them all,but the hiccups continued.Finally,he drank a “secret” mixture(混合物) someone had sent him. By that evening his hiccups were gone.
Why did these cures work for these two men? No one really knows. But people who have studied many cases of hiccups have an idea. Hiccups usually go away if you believe in the cure.
小题1:        might be the best cure for hiccups.
A.Special pills
B.A spoonful of salt
C.Cold water
D.What you believe in
小题2:The British worker spent __________ in stopping his hiccups.
A.4 hours
B.2 days
C.8 months
D.8 years
小题3:What is the main idea of this passage?
A.Different ways to stop hiccups
B.What makes hiccups happen
C.How to get hiccups
D.Jack O‘Leary’s hiccups

题型:不详难度:| 查看答案
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