8. David,as well as some of his classmates,      (play) basket ball on the playground when I saw him.

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2. The boy was so frightened that he didn’t know what to do.

           he didn’t know what to do.

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 請根據(jù)以下提示，以“ Smoking is bad for your health”為題寫一篇100詞左右的文章。

內(nèi)容包括： 1.煙草中的焦油和尼古丁會損害肺，影響呼吸；

2.吸煙能引起許多疾病，如損害牙齒，引起咳嗽，增加患肺癌的風險等；

3.吸煙不僅有害煙民的健康，也毒害著不吸煙的人，尤其是婦女和兒童；

4.勸告人們不要吸煙。

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2. The elephant was still b       ，so we knew it was still alive.

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4. The old soldier was a heavy smoker,so he used all he had to buy a pack of

c        .

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1. Chinese eat more than twice        many vegetables per person today as they did in 2000.

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3. It was reported that a magnificent hotel       (break) into and a lot of valuable things      (steal) .

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 Since the 1970s，scientists have been searching for ways to link the brain with computers. Brain-Computer Interface(BCI) technology could help people with disabilities send commands to machines.

Recently,two researchers，Jose Millan and Michele Tavella from the Federal Polytechnic School in Lausanne,Switzerland，demonstrated(展tjO a small robotic wheelchair directed by a person’s thoughts.

In the laboratory，Tavella operated the wheelchair just by thinking about moving his left or right hand. He could even talk as he watched the vehicle and guided it with his thoughts.

“Our brain has billions of nerve cells. These send signals through the spinal cord(脊髓)   to the muscles to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the muscles，” Tavella says. “Our system allows disabled people to communicate with external world and also to control devices. ”

The researchers designed a special cap for the user. This head cover picks up the signals from the scalp(頭皮)   and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.

Professor Millan,the team leader,says scientists keep improving the computer software that interprets brain signals and turns them into simple commands. “The practical possibilities that BCI technology offers to disabled people can be grouped in two categories ： communication and controlling devices. One example is this wheelchair. ”

He says his team has set two goals. One is testing with real patients,so as to prove that this is a technology they can benefit from. And the other is to guarantee that they can use the technology over long periods of time.

1. BCI is a technology that can       .

   A. help to update computer systems

   B.  link the human brain with computers

   C.  help the disabled to recover

   D.  control a person’s thoughts

2. How did Tavella operate the wheelchair in the laboratory?

   A. By controlling his muscles.

   B.  By talking to the machine.

   C.  By moving his hand.

   D.  By using his mind.

3. Which of the following shows the path of the signals described in Paragraph 5?

   A. scalp—?computer—cap—wheelchair

   B.  computer—cap—scalp—wheelchair

   C.  scalp—cap—?computer—wheelchair

   D.  cap—?computer—scalp—wheelchair

4. The team will test with real patients to       .

   A. make profits from them

   B.  prove the technology useful to them

   C.  make them live longer

  D.  learn about their physical condition

5. Which of the following would be the best title for the text?

   A. Switzerland,the BCI research centre

   B.  New findings about how the human brain works

   C.  BCI could mean more freedom for the disabled

   D.  Robotic vehicles could help to cure brain injuries

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   A good relationship between students and teachers makes the classroom a very inviting place. When you consider your teachers as friends,it’s easier to pay attention to their explanations and improve your grades. When your teachers consider you as a friend，they’ll feel more open in class. 1        Now there are some tips to develop friendly relationship with your teachers.

 2       If you have any questions,ask them. That will make them notice . 

you. But never ask questions you already know the answers to. If your teachers realize you are not asking real questions，they might think you are not actually trying to learn,but only trying to make an impression.

3        When you see one of your teachers in the hall，greet him or her and ask if he or she is going to that concert. Most of the teachers are happy to chat with their students. After a while,they may start to talk with you about nonschool subjects in the classroom.

4       It’s very easy to develop a friendly relationship with any of your

teachers. 5        However,don’t forget no matter what good friends you are,

they will still be your teachers and deserve your respect.

   A.

Ask questions.

   B.

Care about their interests.

   C.

Just treat them as friends.

   D.

The rest is totally up to you.

   E.

Talk about non-school subjects.

   F.

And that will probably affect the classroom in a positive way.

   G.

Some teachers don’t like to have friendly relationship with students. 

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