题目内容
In the lab, don’t _________ anything without your teacher’s permission(允许)．
- A.feel
- B.touch
- C.to touch
- D.feel like
解析：
表示“触摸”的动作时用touch，是一个行为动词；而feel是一个连系动词，后面常跟形容词或介词短语，feel like是指“喜欢”，C项在don’t之后没有加to的形式。结合句意“在实验室里，未经老师允许不许动任何东西”可知，应选B。
Scientists have proved that sleeping and learning go hand in hand. Even a short nap can boost our memory and sharpen our thinking. But the relationship goes deeper than that.
“The brain is not passive while you sleep,” scientist Anat Arzi said. “It’s quite active. You can do many things while you are asleep.”
Arzi and her coworkers didn’t try to teach the sleeping volunteers any complex information, like new words or facts. Instead, the scientists taught volunteers to make new connections between smells and sounds.
When we smell something good, like a flower, we take deep breaths. When we smell something bad, we take short breaths. Arzi and her co-workers based their experiment on these reactions.
Once the volunteers fell asleep in the lab, the scientists went to work. They gave them a whiff of something pleasant and meanwhile played a particular musical note. They didn’t wake up, but they heard—and sniffed(吸气) deeply. Then the scientists gave the volunteers a whiff of something terrible and played a different musical note. Again, the volunteers heard and smelled—a short snort this
time—but didn’t wake up. The researchers repeated the experiment.
After just four repetitions, volunteers made a connection between the musical notes and their paired smells. When the scientists played the musical tone that went with good smells, the sleepers breathed deeply. And when the scientists played the musical tone that went with bad smells, the sleepers breathed briefly—despite there being no bad smell.
The next day, the volunteers woke up with the sound-smell connection. They breathed deeply when hearing one tone and cut their breaths short when hearing the other, which must have been unusual for them. Imagine walking down the street and taking a deep breath upon hearing a particular sound!
【小题1】In the study, the volunteers were taught _______.
| A．to become active during sleep |
| B．to tell the difference between smell |
| C．to learn new words and scientific facts |
| D．to make sound-smell connections |
| A．They took a deep breath. | B．They had a wonderful dream. |
| C．They woke up at once. | D．They took a short breath. |
| A．learned how to play to musical tones |
| B．forgot what happened during their sleep |
| C．continued with the sound-smell connection |
| D．changed their reaction when hearing. |
| A．special smells and sounds can improve our memory. |
| B．our brain can actually learn something new during the sleep. |
| C．the volunteers will always hear similar sounds in the street. |
| D．our brain can tell the difference between smells during the sleep. |
| A．A short sleep can improve our memory and sharpen our thinking. |
| B．Arzi and her coworkers didn’t try to teach the sleeping volunteer some simple information. |
| C．When the volunteer smelt something terrible, they didn’t wake up. |
| D．After four repetitions, volunteers made a connection between the musical notes and their pared smells. |
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Expert: Science Adviser - <>3/21/2011 |
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QUESTION: Dear Marie, Do you have some good suggestions of biology: plant, animal, human science experiments that would work well with teenagers? Scientific methods must go with the experiments. Thanks! < Donna ANSWER: Dear Donna, Marie is not online and I’ll help you instead of him. There are a lot of little things that can be done, but do you mean lab experiment or statistical analysis, etc.? Let us know what can be suitable for you teens, and we will do our best to send you some experiments to do. Best， Gloria |
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Expert: Science Adviser - 3/23/2011 |
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QUESTION: Dear Gloria, I need lab experiments. The teenage students and I will use data from these experiments to make charts, graphs, tables, etc. and to provide claims and evidence to explain more about the results. Thank you very much. Donna ANSWER: Hi there, Your best and easiest way is to do some chemistry experiments. Those are very easy and most probably you can do it in the lab and have charts, etc. for you. I do not have any particular one at the top of my head because I do cancer research and it is a bit more difficult than research for teenagers. I think you can look through these and see if you find something useful for you. http://www.siraze.net/chemistry/sezennur/experiments.htm If not, get back to me and Marie, and we’ll look more. The good thing about this site is that it has the procedures that you can follow. Good luck， Gloria |
1.How many Science Advisers are there working for this website?
A. Only one. B. At least two. C. About three. D. Over five.
2.According to Donna, she and the teenage students need ___________.
A. experiments in the lab B. statistical analysis
C. chemistry experiments D. charts and evidence
3.Who is this text for?
A. Teenagers. B. Teachers. C. Parents. D. Experts.
4. According to Gloria, Donna and the teenage students should __________.
A. turn to others for help B. do cancer researches
C. look through a website D. tell who will be helped