2. 提出学习建议。
注意：1. 词数80左右;
2. 题目和首句已为你写好。
Be Smart Online Learners
Network learning has increasingly become an important means for people to acquire knowledge and solve problems.
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内容包括:
1.活动时间、地点、参与者;
2.活动内容;
3.活动的意义。
注意: 1.词数80左右; 2.可适当增加细节,以使行文连贯。 3. 文章标题已给出，不计入总词数。
A Campus Cultural Festival
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________It was not uncommon to see a person like me in an amusement park, who held purses, cellphones and sunglasses while others enjoyed themselves riding roller coasters. I admitted their courage, but refused to challenge myself.
One day when we were at the Happy Amusement Park in Seattle, my friends tried to get me to ride a roller coaster. But the click, click, click of the cars climbing up the tracks made me scared. The stop at the top, before falling with people's screams, seemed terrible.
My friends were still trying to persuade me, and I was saying no as usual, when I suddenly saw a familiar face, one I had never seen in real life. It was Raine, a popular young tennis star at the top of her game, who was my heroine. I pulled out a pen and the only paper that I could find and walked to her.
She was making her way through a rope that led to a ride called the Loudest Scream. I was running fast because I didn't want to miss the chance to meet her face to face, but I was also a bit nervous. So I waited at the exit to calm down and get closer to her as she came off the ride.
Several minutes later, she got out from the exit, laughing and talking with her brother. I focused on her walking toward me. She walked past. It was more difficult to talk to a star than I thought, but I had to take the chance. I called her name, not very confidently, but more like a question, “Raine?” She turned around. Our eyes actually met. “Would you mind signing for me?” I asked, handing the pen and paper toward her. Her hand wrote over the paper and she said, “You are the first person who has recognized me in the park so let's take a roller coaster together.”
Paragraph 1:
Her warm invitation actually filled me with mixed feelings.
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Paragraph 2:
My friend came up and asked, “Are you sure you will take the Loudest Scream?”
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4 . Babies are surrounded by human language, always listening and processing. Eventually, they put sounds together to produce a “Daddy” or a “Mama”. But what still confuses neuroscientists is exactly how the brain works to put it all together.
To figure it out, a team of researchers turned to a frequent stand-in (代替) for babies when it comes to language learning: the song-learning zebra finch. “We’ve known songbirds learn their song by first forming a memory of their father’s song or another adult’s song. Then they use that memory to guide their song learning,” said Neuroscientist Todd Roberts. “It’s been a long-term goal of the field to figure out how or where in the brain this memory is. This type of imitative learning that birds do is very similar to the type of learning that we engage in regularly—particularly when we’re young, we use it to guide our speech learning.”
Roberts and his team had a feeling that the interface (交叉区域) between sensory areas and motor areas in the brain was critical for this process, and they focused on a group of brain cells called the NIf.
“In order to prove that we could identify these circuits, we thought if we could implant a false memory.” First, they used a virus to cause the neurons (神经元) in the birds’ NIf to become sensitive to light. Then, using a tiny electrode as a flashlight, they activated (激活) the neurons. The length of each pulse of light corresponded with the amount of time the neurons would fire. And the birds’ brains interpreted that time period as the length of each note.
Soon enough, the birds began to practice the notes they had learned, even though they never really heard the sounds. Amazingly, the birds produced them in the correct social situations. The researchers say this is the first time anybody has found exactly a part of the brain necessary for generating the sorts of memories needed to copy sounds.
“This line of research is going to help us identify where in the brain we encode memories of relevant social experiences that we use to guide learning. We know that there are several neurodevelopmental disorders in people that have really far-reaching effects on this type of learning.”
1. The zebra finch is researched because its song-learning mode ________.| A．decides whether it will sing songs |
| B．helps it to say “Daddy” or “Mama” |
| C．is like the way babies learn speech |
| D．reflects its talent for imitating its father’s song |
| A．The interface in the brain. |
| B．Guidance from adults. |
| C．Imitative learning type like birds’. |
| D．The way of regular learning. |
| A．Scientists activated some neurons by using an electrode. |
| B．A bird only sings what it heard before. |
| C．The brain produces tiny electrodes. |
| D．Birds are sensitive to light. |
| A．A change in our way of listening and processing. |
| B．A chance to have relevant social experiences. |
| C．A better knowledge of the secrets of learning. |
| D．Identification of neurodevelopmental disorders. |
