You__ to the meeting this afternoon if you have something important to do .
|
A．needn't to come |
B．don't need come |
|
C．don't need coming |
D．needn't come |
a language requires time and effort.
|
A．Learn |
B．Learning |
C． To learn |
D． Being learned |
_______ you work harder than before, you will pass this module exam.
|
A．As soon as |
B．As long as |
C．As if |
D．Even |
—Why not take this road? It’s a short cut.
— I am afraid we can’t. It _____.
|
A．is repaired |
B．is being repaired |
C．has repaired |
D．is repairing |
阅读下面短文并回答问题，然后将答案写到答题卡相应的位置上(请注意问题后的词数要求)。
[ 1 ] Do you spend over an hour each day texting messages to your friends? Do you frequently ignore work, study, and other activities to check your phone for messages? Are you anxious and restless if you are separated from your mobile phone,9 Do you hardly ever use your phone to talk any more, and do your thumbs hurt from texting too much?
[2] If , then it is very possible that you are a textaholic. A textaholic can be defined as someone who is addicted to sending and receiving messages. The main symptoms are a strong desire to text messages, which takes precedence (优先)over everything else, and bad moods, low spirits and a lack of self-confidence if messages fail to come in. The root of the problem, as with many addictions, is the desire to escape from emotional difficulties such as stress, atrxiety and relationship problems. Experts warn that text addiction is likely to become the most common form of addiction in the future, especially among the young.
[3] So what can you do if you think you may be a textaholic? The key is to get your life back in balance. Make sure you resist the urge to answer every message you receive, and consider leaving your mobile phone behind occasionally when you go out. Most importantly, make a point of spending quality time with friends and family, and make time to re-learn the art of face-to-face conversation instead of conducting your relationships by means of text messages. Not only will you save time and money, but you may also rediscover the pleasure of true communication.
1. How does the author introduce the topic of the text? (no more than 5 words)
2. Fill in the blank in Paragraph 2 with proper words. (no more than 8 words)
3.What emotional difficulties may be the causes of text addiction? (no more than 5 words)
4.What do experts say about text addiction? (no more than 14 words)
5.What is the main idea of Paragraph 3? (no more than 8 words)
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（展示）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 band. He could even talk as he watched the vehicle and guided it with his thoughts.
“our brain has billions of nerve ceils. 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(头皮) 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.
Prof. 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 frotn. 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 Center
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
