Have you ever noticed that your fingertips are winked when you’ve just finished swimming or washing dishes? It seems as if your hands have aged 30 years i a second. But is this an accident? Or is it something that nature has built into our bodies?

If your finger’s wrinkling up had no use at all, “ it wouldn’t need to.” Professor Tom Smulders from Newcastle University, UK, told BBC News. By studying wet fingers closely, Smulders and his partners found that the wrinkles looked a bit like the patterns on the car tire or o the bottom of the running shoes. So they made a guess that wrinkles on fingers might be able to help the hand hold things more tightly.

To test this, researchers asked 20 people to pick up marbles from water with their hands. But before they started, some of the people had to keep their hands in water for half an hour.

The researchers found that the people with wrinkled fingers completed the task the task faster than those with dry hands. But when they were asked to move dry marbles, all the people performed equally well, no matter they had the wrinkled fingers or not.

Our ancestors might not have played with marbles, but wrinkled fingers could have made it easier for them to climb around in the wet forests and catch fish from rivers, researchers say.

Similarly, our toes also get wrinkled in water. This may have developed from our ancestor’s need to run on wet ground.

But the question is, if wrinkled fingers are so helpful, why don’t our hands just stay that way all the time? Researchers explained that wrinkling has its disadvantage: wet fingertips are far less sensitive than smooth ones, reducing our sense of touch.

26, What does the underlined world “this ” in the third paragraph refer to?

A. Wether fingers have wrinkles after they are put in water.

B. Wether wrinkled fingers can hold things more tightly.

C. Why keeping things in water makes them wrinkled.

D. Why wrinkles help hands hold things more tightly.

27, The test shows that ________.

A. winkled hands hold dry things more tightly than dry hands do.

B. dry hands hold dry things more tightly than wrinkled hands do.

C. winkled hands hold wet things more tightly than dry hands do.

D. dry hands hold wet things more tightly than wrinkled hands do.

28. What might be the disadvantage of wrinkled fingers?

A. They are too sensitive to be touched.

B. They might be more likely to get hurt.

C. They cannot hold things tightly enough.

D. They are not so sensitive as dry fingers.

1. She doesn’t like mooncakes because they are too sweet.（划线部分提问）

_______  ________ she ____________ mooncakes?

2. There are some elephants in the zoo.（改为单数意义的句子）

_______  ________ elephant in the zoo

3. Simon walks his dog every day. (用now 替换every day)

Simon ________ ________  his dog now.          

4. My mother has an egg and a glass of milk for breakfast. (对划线部分提问)

________  ____________ your mother_________ for breakfast?

 

阅读理解

What’s the coolest kind of transportation(交通) for middle school students back from winter holidays? A racing bike? A car? No, it’s a special kind of shoes called Heelys(暴走鞋). Heelys look just like common sports shoes, but they have a wheel(轮子) hidden(藏) in the heel(鞋跟). So instead of walking, kids can “fly” around in them.

“Wearing Heelys is fun and cool!” said Wu Peng, a boy who wore them on his first day back at No. 6 Middle School in Beijing. Wu Peng said he loves the shoes so much that he wears them to go here and there. Sometimes he even follows his parents’ car to the supermarket in his Heelys!

Other students also think they are very cool, but some aren’t so lucky with their Heelys. It’s said that some children fell down and got hurt while wearing these shoes.

“Heelys wheels are in the heels of the shoes, so it’s easy to fall,” said Liu Rui, a doctor at the Hong Kong International Medical Clinic, Beijing. Even worse, Liu said, “Wearing Heelys for a long time could stop young people from developing their legs. ”

1.What’s the coolest kind of transportation according to the passage?

A．A car.	B．A racing bike.
C．A pair of Heelys.	D．A pair of common sports shoes.

2. Why do kids like Heelys when they wear them?

A．Because they can fly in space.	B．Because they can walk fast.
C．Because they are fun and cool.	D．Because they can skate.

3.Heelys are common shoes with ____ the heel.

A．a wheel hidden in	B．a wheel in front of
C．an arm hidden in	D．a leg hidden in

4. Not all the kids are lucky because some of them ____.

A．have no money to buy them	B．are afraid of falling down
C．are not allowed(不被允许) to wear them	D．fell down and got hurt

5. What does the doctor think of Heelys?

A．They are too expensive to buy.	B．They are too fast to go.
C．They are bad for kids’ health.	D．They are good for training.

 

Psychology（心理学）tells us that many people hate to take risks. But it is good for us to take risks, especially when the risk is to achieve a desired(渴望的) result. In that way, we become stronger and braver.
Our human nature should be to take risks, but some people just sit and wish they didn’t have the fear to move on. This is because they failed a few times in their lives. Please step out and don’t let the past hold you back from living life to the fullest. Move forward and move on! In studying the psychology of taking risks, we find that human nature provides us with the desire to experiment and take chances.
Risk taking is a great advantage that allowed our ancestors(祖先) to become stronger and stronger day by day. By taking risks they fought off enemies and discovered new territories（领土）. This attitude has become a part of our modern culture. Riding a roller coaster is a common risk taking activity. Even each person seems to enjoy the risk although they have the understanding that it is dangerous. This psychological and biological (生物学的) connection creates an interesting connection between what is unsafe and what humans enjoy.
Getting in a car each day is a risk. Getting out of bed is a risk, too. We need to take risks so that we can complete many things. Astronauts take risks when they get inside a rocket(火箭); however, the things they achieve are great. Businessmen take a risk when they buy parts of a company. However, without doing that, they could not make more money.
We need to take risks so that we can gain(获得) something. It is impossible to move forward in life, earn money, enjoy a relationship, play a sport, or do anything else without taking a risk. It is all part of the game. It’s one of the most important parts of life.
【小题1】Some people don’t want to take risks, mainly because ___________.

A．they are too lazy to move on

B．they feel pleased with the present life

C．they have failed several times before

D．they show little interest in the strange world outside

【小题2】What does the underlined part “This attitude” in Paragraph 3 mean?

A．Taking risks	B．Fighting off enemies
C．Discovering new territories	D．Becoming stronger and stronger

【小题3】What can we infer from the passage?

A．Daily life is full of risks.

B．The safest place has the greatest risk.

C．People should take risks when they are young.

D．We can always achieve our goals by taking risks.

【小题4】 Businessmen take a risk in order to __________.

A．sell parts of a company

B．complete many things

C．make more money

D．get inside a rocket

【小题5】What would be the title for the passage?

A．Taking risks is easier said than done	B．Risks taken by ancestors
C．Live our life to the fullest	D．No risk, no gain.

Psychology（心理学）tells us that many people hate to take risks. But it is good for us to take risks, especially when the risk is to achieve a desired(渴望的) result. In that way, we become stronger and braver.

Our human nature should be to take risks, but some people just sit and wish they didn’t have the fear to move on. This is because they failed a few times in their lives. Please step out and don’t let the past hold you back from living life to the fullest. Move forward and move on! In studying the psychology of taking risks, we find that human nature provides us with the desire to experiment and take chances.

Risk taking is a great advantage that allowed our ancestors(祖先) to become stronger and stronger day by day. By taking risks they fought off enemies and discovered new territories（领土）. This attitude has become a part of our modern culture. Riding a roller coaster is a common risk taking activity. Even each person seems to enjoy the risk although they have the understanding that it is dangerous. This psychological and biological (生物学的) connection creates an interesting connection between what is unsafe and what humans enjoy.

Getting in a car each day is a risk. Getting out of bed is a risk, too. We need to take risks so that we can complete many things. Astronauts take risks when they get inside a rocket(火箭); however, the things they achieve are great. Businessmen take a risk when they buy parts of a company. However, without doing that, they could not make more money.

We need to take risks so that we can gain(获得) something. It is impossible to move forward in life, earn money, enjoy a relationship, play a sport, or do anything else without taking a risk. It is all part of the game. It’s one of the most important parts of life.

1.Some people don’t want to take risks, mainly because ___________.

   A. they are too lazy to move on

   B. they feel pleased with the present life

   C. they have failed several times before

   D. they show little interest in the strange world outside

2.What does the underlined part “This attitude” in Paragraph 3 mean?

   A. Taking risks                          B. Fighting off enemies

   C. Discovering new territories           D. Becoming stronger and stronger

3.What can we infer from the passage?

   A. Daily life is full of risks.

   B. The safest place has the greatest risk.

   C. People should take risks when they are young.

   D. We can always achieve our goals by taking risks.

4. Businessmen take a risk in order to __________.

   A. sell parts of a company

   B. complete many things

   C. make more money

   D. get inside a rocket

5.What would be the title for the passage?

   A. Taking risks is easier said than done    B. Risks taken by ancestors

   C. Live our life to the fullest              D. No risk, no gain.