It seems that there’s a good reason why dogs are always seen as man’s best friend. Scientists have found that dogs are the only animals that can read emotion(情感)in faces much like humans. The finding suggests that like an understanding friend, dogs can see if we are happy, sad, pleased or angry.
When humans look at a new face, their eyes usually look across the left, falling on the right hand side of the person’s face first. A possible reason for this is that the right side of the human face is better at expressing emotions.
Scientists have now shown that pet dogs also have “left gaze bias(左视偏好)”, but only when looking at human faces. No other animal has been known to do like this before. Dr. Kun Guo showed 17 dogs pictures of human, dog and monkey faces as well as something else with his team. The dogs’ eyes and heads show a strong left gaze bias when the animals see human faces. But this did not happen when they were shown other pictures, including those of dogs.
Guo suggests that over thousands of years living with humans, dogs may have developed the left gaze bias as a way to guess our emotions.
“Recent studies show that the right side of our faces can express emotions better than the left. If true, then it makes sense for dogs and humans to see the right hand side of a face first.”
【小题1】 Why are dogs seen as man’s best friend according to the passage?

 (A)There was ice on the road, and the doctor’s car hit a tree and turned over three times.To his surrise,he wasn’t hurt.He got out of the car and walked to the nearest house.he wanted to telephone the garage for help.AA woman,one of his patients,opened the door.”Oh,doctor,”she said,”I have only just telephoned you.You must have a very fast car.You hae got here very quickly,there was a very bad accident on the road outside.I saw it through the window.I’m sure the driver will need your help.”

判断正误（写T或F）

(  )1.The doctor was driving t the garage before the accident.

(  )2.A tree fell across te road,so the traffic accident happened.

(  )3.The doctor knew one of his patients lived in the nearest house.

(  )4. The patient phoned the doctor because she thought someone needed help.

(  )5. The woman wanted the doctor,but was surprised that he came so quickly.

(B) This is a street crossing. There are red and green lights at each corner. Drivers must watch he lights carefully.When there is a green light, the cars may go. When there is a red light, the cars must stop. Drivers must wait until the red light changes to green. Then they can go. Sometimes drivers want to make a right turn or a left turn. They can make a right turn when the light is green or red. But they must wait until the green light is shining if they want to turn left.Some people are colour-blind. They can’t see the difference between red and green. These people must not drive, or else there will be accidents. We must keep our streets safe.

(  )6.Drivers must watch __carefully at each corner.

(   )7.When there is a red light, ___________.

A.           the cars must stop                   B. the cars may go

C. the cars may make a left turn           D. the cars can’t stop

(  )8. The cars can make a left turn when _______________.

A.           There is a red light           B. There is a green light

C. There is a red or green light         D. There is a yellow light

(  )9.The colour-blind people must not drive because____________.

they are blind    B. they can’t tell the difference between red and green.

A.           C.they can’t hear anything       D. they can’t see the lights.

(  )10.According to the passage, we can know ____________.

A.              where there is a street crossing, there are traffic lights

B. the colour-blind people caused(引起) all the traffic accidents

C.if drivers always watch the traffic lights carefully, there will be fewer accidents

D. people who wear glasses cannot drive cars.

“Mary, your bedroom is a mess ．Come and clean it up right now,” her mum said．Mary wanted to go outside and play．“I’ll clean it up later, Mum．”

“Oh no, you won’t．I’ve been asking you for days,” her mum said．

Mary went into her bedroom．She put away all of her clothes and put all the rubbish into a plastic bag．“Mum, I’ve finished,” she smiled, “I’m going outside to play now．”

She ran into the back garden．This was her favorite place to be．A small butterfly flew over and landed on Mary’s hand．“You’re a pretty little butterfly,” Mary said, “Does your mum make you keep your bedroom clean?”

“What if I left my rubbish all over and didn’t keep the garden clean and tidy? Would you have a nice place to sit among the flowers?” said the butterfly．

“I’d not be happy if I came out to see rubbish here and there,” Mary said．

“Everybody has to do their part and keep their rooms or their flower gardens clean,” the butterfly said and then flew away．

Mary hurried into the house and said to her mother, “I’ll keep my room clean from now on, Mum．I’ve got to do my part．” And she did just that．

1．What did Mary mean by the word “later” in the first paragraph?

   A．never              B．at once         C．in some days        D．after she played outside

2．Which is the correct order for the following to take place in the story?

   a．Mary played in the back garden．          b．Mary promised to keep her room clean．

   c．Mum asked Mary to clean up her room． d．A butterfly flew over and talked with Mary．

   e．Mary cleaned up her room．

   A．a, c, d, b, e     B．c, a, d, b, e     C．c, e, a, d, b        D．a, d, b, c, e

3．It can be inferred （推测） from the story that _________．

   A．Mum asked the butterfly to teach Mary

   B．the butterfly always picked up the rubbish left by Mary

   C．Mary’s back garden was clean and tidy

   D．Mary played with the butterfly every day

4．This story is most probably written for _________．

   A．insects （昆虫）       B．kids          C．parents       D．teachers