A recent experiment proves that bees can save...

A recent experiment proves that bees can save time and energy when they fly around to different flowers.

Dr Nigel Raine, from the Royal Holloway University of London, has always been interested in finding out why animal behave like they do. He is also interested in bees. It was not a surprise when he and some other scientists from Queen Mary University of London discovered that bees can quickly solve a problem that takes computers many days.

Flowers make pollen (花粉), and when bees visit them, they carry the pollen to other flowers. The plants need the pollen to make seeds that will grow. Dr Raine notes that we get a lot of our food from plants, so it is important to know how the bees move around and take the pollen between flowers. The scientists wanted to examine the journey that the bees take and how they save energy when they do this. They completed the experiment on the roof of Queen Mary University, using artificial flowers and a large amount of nectar, a sweet liquid produced by flowers. They taught one bee to visit all the flowers in one place at the same time. When the bee got to know the location of the flowers well, they saw how it flew around and returned home with the nectar. After this, they changed the locations of the flowers. The scientists thought the bee would follow the route it knew already. This would mean that it followed a longer route than it needed to, and so it would use more energy. They watched the bee carefully as it travelled between the flowers in their new location, and they made notes. But in the experiment, the bee changed its route and flew a shorter distance.

The problem that the bee solved is similar to a maths puzzle called the ‘travelling salesman problem’. A salesman who goes to different places to sell things wants to travel the shortest distance. But he has to calculate the length of many possible routes to know which one is the shortest. A computer can calculate this but the experiment shows bees can do the same calculation quickly with a tiny brain. Scientists are very interested in how they do this. It would help us to understand how pollen is moved around. In addition, if they find this out, it could help us to improve communication networks. This might help humans to reduce traffic jams when there is an accident, for example.

1.The underlined word “nectar” in the third paragraph means_________.

A. powder B. honey

C. vitamin D. water

2.The researcher’s experiment found _________.

A. bees could manage to avoid accidents

B. bees showed signs of being very intelligent

C. bees could take the same route they knew before

D. bees were faster at calculating distance than computers

3.According to the last paragraph, the next step of the study is to discover how _______.

A. pollen is moved around

B. traffic jams can be reduced

C. bees can calculate so quickly

D. communication networks are improved

4.Where does this passage probably come from?

A. A novel. B. A website.

C. A science magazine. D. An advertisement.

高三英语阅读理解中等难度题查看答案及解析

More and more scientific experiments prove that physical exercise can reduce the dangers of some illnesses in middle-aged persons．Exercise strengthens the heart muscle，reduces blood pressure and help to prevent muscles from changing into fat．Physical exercise is just as important for children．

Exercise and food affect growing speed in young lab animals．Baby mice start running as soon as they are big enough to use an exercise wheel in their cage．If  they get extra food and run a lot，they will grow as much as 1.5 times bigger than normal．

The same differences in growing speed might be found between active and inactive children．Physical exercise helps active children grow faster than inactive children．One experiment shows that the brains of the mice that had enough exercise weighed about 3％more than those of the mice that did not exercise The mice that exercised are much quicker to learn doing new exercise than the mice that did not exercise．

The results of the experiments suppose the theory that exercise can help babies learn to talk and walk sooner than expected．

The good effects of physical exercise are not limited to children and middle-aged people．Exercise continues to be an important part of our lives after we grow old．For example，people over 50 years old begin to lose calcium(钙) from their bones，which get weaker and can break easily．Physical exercise，however，helps to strengthen the bones and to prevent them from losing calcium．Of course，old people can take medicines to prevent themselves from suffering from losing calcium．But the medicines they take increase the chance of developing some kind of cancer(癌)．So physical exercise is a much safer treatment(治疗)．

1.From the passage we know that         .

2.Active children        than inactive children．

3.Why are the bones of old people easy to break according to the passage?

4.The passage tells people that       .

高三英语阅读理解困难题查看答案及解析

The surprising experiment I am about to describe proves that air is all around you and that it proves down upon you. Air pressure is a wonderful force. When you swim underwater, you can feel water push down your body. The air all around you does the same. However, your body is so used to it that you do not notice this. The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth’s surface.

The following experiment is an easy one that you can do at home. But make sure that you are supervised, because you will need to use matches. Now foe the experiment！

What you need

·A hard-boiled egg without the shell

·A bottle with a neck slightly smaller than the egg

·A piece of paper

·A match

Metheod

1） Check that the paper will sit firmly on the neck of the bottle.

2） Tear the paper into strips and put the strips into the bottle.

3） Light the paper by dropping a burning match into the bottle.

4） Quickly sit the egg on the neck of the bottle.

Result

Astonishingly, the egg will be sucked into the bottle. Your friends will be amazed when you show them the experiment. But be careful when you handle matches.

Why it happened

As the paper burns, it needs oxygen and uses up the oxygen （air） in the bottle. The egg acts as a seal in the neck of the bottle, so no more air can get inside. This reduces the air pressure inside the bottle. The air pressure must equalize, so more air from outside must enter the bottle. The outside air pressure against the egg and then the egg is pushed into the bottle! The proves that air is all around and that it is pressing down on it.

1.Why is there the need to take care when you are doing the experiment?

A. The bottle could break.

B. You need to light the paper with a match.

C. The egg needs to be shelled.

D. The egg has to be perfectly placed on the neck of the bottle.

2.In the experiment, the burning inside the bottle can___.

A. equalize the air pressure inside and outside

B. make a seal in the neck of the bottle

C. finish up the oxygen inside the bottle

D. produce more oxygen inside the bottle

3.How did the egg put into the bottle？

A. The oxygen inside the bottle sucked the egg in.

B. It became salt without the shell.

C. The neck of the bottle was wide enough.

D. The outside air pressure forced it into the bottle.

4.The experiment is carried cut to prove ______.

A. water pushes on your body when you swim underwater.

B. the earth is surrounded by a layer of air called the atmosphere.

C. the pressure of air around us has a powerful force.

D. the air pressure is not equalized around us.

高三英语阅读理解中等难度题查看答案及解析

The surprising experiment I am about to describe proves that air is all around you and that it proves down upon you．Air pressure is a wonderful force．When you swim underwater, you can feel water push down your body．The air all around you does the same．However, your body is so used to it that you do not notice this．The pressure is caused by a layer of air called the atmosphere．This layer surrounds the Earth, extending to about five kilometers above the Earth's surface．

The following experiment is an easy one that you can do at home．But make sure that you are supervised, because you will need to use matches．

What you need

·A hard-boiled egg without the shell

·A bottle with a neck slightly smaller than the egg

·A piece of paper

·A match

Method

1）Check that the paper will sit firmly on the neck of the bottle．

2）Tear the paper into strips and put the strips into the bottle．

3）Light the paper by dropping a burning match into the bottle．

4）Quickly sit the egg on the neck of the bottle．

Result

Astonishingly, the egg will be sucked into the bottle．Your friends will be amazed when you show them the experiment．But be careful when you handle matches．

Why it happened

As the paper burns, it needs oxygen and uses up the oxygen （air）in the bottle．The egg acts as a seal in the neck of the bottle, so no more air can get inside．This reduces the air pressure inside the bottle．The air pressure must equalize, so more air from outside must enter the bottle．The outside air presses against the egg and then the egg is pushed into the bottle! That proves that air is all around and that it is pressing down on it．

1.Why is there the need to take care when you are doing the experiment?

A．The bottle could break．

B．You need to light the paper with a match．

C．The egg needs to be shelled．

D．The egg has to be perfectly placed on the neck of the bottle．

2.In the experiment, the burning inside the bottle can__．

A．equalize the air pressure inside and outside

B．make a seal in the neck of the bottle

C．finish up the oxygen inside the bottle

D．produce more oxygen inside the bottle

3.How did the egg put into the bottle?

A．The oxygen inside the bottle sucked the egg in．

B．It became salt without the shell．

C．The neck of the bottle was wide enough．

D．The outside air pressure forced it into the bottle．

4.The experiment is carried out to prove ____．

A．water pushes on your body when you swim underwater

B．the earth is surrounded by a layer of air called the atmosphere

C．the pressure of air around us has a powerful force

D．the air pressure is not equalized around us

高三英语阅读理解简单题查看答案及解析

Experiments have proved that children can   1         (instruct) in swimming at a very early age. At a special swimming pool in Los Angeles, children become expert at   2     (hold) their breath under water even before they can walk.          3          (baby) of two months old do not appear to be reluctant to enter the water. It is not long   4        they are so accustomed to swimming   5         they can pick up weights from the floor of the pool. A game that is very popular with these young   6       (swim) is the underwater tricycle race. Tricycles are lined up on the floor of the pool seven feet under water. The children compete against each other to reach the other end of the pool. Many pedal their tricycles,  7      most of them prefer to push or drag them. Some children   8       cover the whole length of the pool   9        coming up for breath even once. Whether they will ever become future Olympic champions, only time will tell. Meanwhile, they should encourage     10         among us who cannot swim five yards before they are gasping for air.

高三英语填空题简单题查看答案及解析

The wonderful experiment I am going to introduce proves that air is just all around and that it presses down upon us. Air pressure is a wonderful force. When you swim underwater, you can feel water push down your body. The air all around you does the same. However, your body is so used to it that you do not notice this. The pressure is caused by a layer of air called the atmosphere. This layer surrounds the Earth, extending to about five kilometers above the Earth’s surface.

The following experiment is an easy one that you can do at home. But make sure that you are supervised, because you will need to use matches. Now for the experiment！

What you need:

·A hard-boiled egg without the shell

·A bottle with a neck slightly smaller than the egg

·A piece of paper

·A match

Method:

1） Check that the paper will sit firmly on the neck of the bottle.

2） Tear the paper into strips and put the strips into the bottle.

3） Light the paper by dropping a burning match into the bottle.

4）Quickly sit the egg on the neck of the bottle.

Result:

Astonishingly, the egg will be sucked into the bottle. Your friends will be amazed when you show them the experiment. But be careful when you handle matches.

Why it happened

As the paper burns, it needs oxygen and uses up the oxygen（air）in the bottle. The egg acts as a seal in the neck of the bottle, so no more air can get inside. This reduces the air pressure inside the bottle. The air pressure must equalize, so more air from outside must enter the bottle. The outside air pressure against the egg and then the egg is pushed into the bottle! This proves that air is all around and that it is pressing down on it.

1.Why is there the need to take care when you are doing the experiment?

A. The bottle could break.

B. You need to light the paper with a match.

C. The egg needs to be shelled.

D. The egg has to be perfectly placed on the neck of the bottle.

2.In the experiment, the burning inside the bottle can ________.

A. equalize the air pressure inside and outside

B. make a seal in the neck of the bottle

C. finish up the oxygen inside the bottle

D. produce more oxygen inside the bottle

3.How was the egg put into the bottle?

A. The oxygen inside the bottle sucked the egg in.

B. It became salt without the shell.

C. The neck of the bottle was wide enough.

D. The outside air pressure forced it into the bottle.

高三英语长对话或独白中等难度题查看答案及解析

The great achievements in recent 30 years have proved that the reform and open policy is a vital measure that ________ the national conditions of China.

A．fits into           B．turn into          C．break into         D．look into

高三英语单项填空中等难度题查看答案及解析

（5）阅读理解

Can you believe your eyes? A recent experiment suggests that the answer to that question may depend on your age.

Martin Doherty, a psychologist at the University of Stirling in Scotland, led the team of scientists. In this experiment, Doherty and his team tested the perception(观察力) of some people, using pictures of some orange circles. The researchers showed the same pictures to two groups of people. The first group included 151 children aged 4 to 10, and the second group included 24 adults aged 18 to 25.

The first group of pictures showed two circles alone on a white background. One of the circles was larger than the other, and these people were asked to identify the larger one. Four-year-olds identified the correct circle 79 percent of the time. Adults identified the correct circle 95 percent of the time.

Next, both groups were shown a picture where the orange circles, again of different sizes, were surrounded by gray circles. Here’s where the trick lies in. In some of the pictures, the smaller orange circle was surrounded by even smaller gray circles — making the orange circle appear larger than the other orange circle, which was the real larger one. And the larger orange circle was surrounded by even bigger gray circles — so it appeared to be smaller than the real smaller orange circle.

When young children aged 4 to 6 looked at these tricky pictures, they weren’t fooled — they were still able to find the bigger circle with roughly the same accuracy as before. Older children and adults, on the other hand, did not do as well. Older children often identified the smaller circle as the larger one, and adults got it wrong most of the time.

As children get older, Doherty said, their brains may develop the ability to identify visual context. In other words, they will begin to process the whole picture at once: the tricky gray circles, as well as the orange circle in the middle. As a result, they’re more likely to fall for this kind of visual trick.

1．Doherty and his team of scientists did an experiment to evaluate        .

A．children’s and adults’ eye-sight

B．people’s ability to see accurately

C．children’s and adults’ brains

D．the influence of people’s age

2．When asked to find the larger circle,        .

A．children at 6 got it wrong 79 % of the time with no gray ones around

B．only adults over 18 got it right 95% of the time with gray ones around

C．children at 4 got it right about 79 % of the time with gray ones around

D．adults got it right most of the time with gray ones around

3．According to the passage, we can know that        .

A．a smaller orange circle appears bigger on a white background

B．an orange circle appears bigger than a gray one of the same size

C．a circle surrounded by other circles looks bigger than its real size

D．a circle surrounded by bigger ones looks smaller than its real size

4．Visual context may work when children get older than        .

A．4                                     B．6                                     C．10                                   D．18

5．Why are younger children not fooled?

A．Because they are smarter than older children and adults.

B．Because older people are influenced by their experience.

C．Because people’s eyes become weaker as they grow older.

D．Because their brain can hardly notice related things together.

高三英语阅读理解简单题查看答案及解析

Many of us spend a great deal of time and energy trying to prove that we are right and others are wrong. Many people21 that it’s their job to show others how their positions, statements, and points of view are 22 , and that on doing so, the person they are correcting is going to somehow _23 it, or at least learn something. Wrong!

Think about it. Have you ever been _24 by someone and said to him, “Thank you so much for showing me that I’m wrong and you’re right”? Or, has anyone you know ever 25 you when you corrected them, or made yourself “right” at their26 ? Of course not. The truth is, all of us 27 to be corrected. We all want our position to be 28 and understood by others. Being listened to and heard is one of the greatest29 of the human heart. And those who learn to30 are the most loved and respected. Those who are in the 31 of correcting others are often resented(怨恨 ) and 32  .

A wonderful way for becoming more peaceful and loving is to practice 33  others the joy of being right ---give them the glory. 34 correcting. When someone says, “ I really feel it’s important to …”, rather than breaking 35 and saying, “No, it’s more important to… “, simply let it go and allow their statement to36 . The people in your life will become less defensive and more 37  . They will appreciate you more than you could ever have 38 . You’ll discover the joy of joining in and witnessing other people’s 39 , which is far more rewarding than a battle of egos( 自我 ). Starting today, let others be ________“ 40 ”  , most of the time.

1.A. believe          B. doubt          C. prove          D. tell

2.A. unimportant      B. unbelievable  C. incorrect      D. imperfect

3.A. consider         B. appreciate     C. understand   D. refuse

4.A. fooled           B. helped         C. taught         D. corrected

5.A. thanked          B. rewarded       C. cared          D. accepted

6.A. side             B. price          C. expense        D. value

7.A. like             B. hate           C. prefer         D. afford

8.A. admired          B. received       C. realized       D. respected

9.A. shortcomings     B. advantage      C. desires        D. wishes

10.A. talk            B. praise         C. help           D. listen

11.A. habit           B. form           C. position       D. purpose

12.A. punished        B. avoided        C. left           D. laughed

13.A. letting         B. lending        C. allowing       D. owing

14. A. Stop           B. Continue       C. Practise       D. Try

15.A. out             B. up             C. in             D. off

16. A. last           B. send           C. work           D. stand

17.A. helpful         B. loving         C. careful        D. popular

18. A. dreamed        B. requested      C. asked          D. demanded

19.A. sufferings      B. worries        C. progress       D. happiness

20.A. happy     B. right    C. sorry    D. proud

高三英语完型填空中等难度题查看答案及解析

--- I 　 　　 so busily recently that I 　 　　 no time to help you with your maths.

--- That’s OK. I can manage it by myself.

A. have been working; have　　 B. have worked; had

C. am working; will have　　 D. had been working; had had

高三英语单项填空中等难度题查看答案及解析