Patients in the early stages of Alzheimer’s disease often struggle to remember recently learned information, meaning they forget things like important appointments or where they left their keys. But it seems that these memories are not lost. They are still filed away in the brain somewhere; they just can’t be easily accessed.
Now, researchers at MIT have developed a means of getting back memories in mice suffering from Alzheimer’s. The method relies on a technique that uses light to control genetically modified neurons (转基因神经元). Currently it is too early to be used in human trials as it involves inserting light emitting (发光) equipment into the subjects’ brains, but the same principles still apply, the researchers said.
“The important point is that this is evidence of concept. That is, even if a memory seems to be gone, it is still there. It’s a matter of how to get it back,” said senior researcher Susumu Tonegawa.
The team took two groups of mice, one genetically engineered to develop Alzheimer’s and one healthy. They then placed them into a room and gave them a mild electric shock. All of the mice showed fear when put back in an hour later. When placed in the room a third time several days later, the Alzheimer’s mice acted normally. They had forgotten the shock.
The researchers were then able to bring back the memory of the shock by activating (激活) the cells in which the memories were stored. Even when the mice were put into an unfamiliar room, they showed fear when the cells associated with the shock were activated.
“Short-term memory seems to be normal, on the order of hours. But for long-term memory, these early-Alzheimer’s mice seem to be damaged,” said lead researcher Dheeraj Roy. “Directly activating the cells that we believe are holding the memory helps them get it back. This suggests that it is indeed an access problem to the information, not that they’re unable to learn or store this memory.”
1.What can we learn about the researchers at MIT?
A. They are the pioneers of brain research.
B. They have used the method in human trials.
C. They can cure Alzheimer’s using the new method.
D. They can get back memories in mice with Alzheimer’s.
2.Why did the Alzheimer’s mice behave normally a third time?
A. They failed to remember the electric shock.
B. They were accustomed to the situation.
C. They managed to overcome the fear.
D. They activated the association.
3.For long-term memory, the early Alzheimer’s mice _______.
A. can activate their blood cells
B. can’t learn new tricks well
C. can easily get back their memory
D. can’t access the information stored
4.The main purpose of the text is to _______.
A. introduce a method of a research
B. report the latest discovery about a disease
C. give advice on how to improve memory
D. explain how our brain stores information
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When the clerk at the counter was rude to her, she and told the clerk to speak to him.
A. rang Tony about B. rang Tony up C. rang Tony back D. rang Tony for
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I was in the sixth grade and has just moved to California from Alaska when I met Ms. Linda Jones. Most of my teachers seemed to_______me; I was one more student among hundreds. Ms. Jones, however, took a _______interest. “You can write,” she said, explaining that she wanted to move me into the honors English class. So did I.
A decade later, when my first novel was_______, I went back to Ms. Jones’s classroom, handing her a copy of my book. “And I_______this for you.” Ms. Jones began to cry_______. She’d been considering early_______, she said, _______she felt she wasn’t having enough of an effect_________her students. I didn’t know how to make Ms. Jones understand what she’d done for me: _______her, I fell in love with Shakespeare. I learned how to compose an essay. It was her ________in me that gave me the confidence to become a writer. I__________her.
Fifteen years later, when I heard that she was ________ready to retire, I attended her________party. All Ms. Jones needed to do was say a few words thanking her colleagues for coming. ________, she stood up and made an exciting ________that began like this: “For those of you complaining that________have changed, and that it’s harder to teach these days. You’re getting ________and lazy. These kids haven’t changed. You have! Do not________these kids!”
When she finished her talk, everyone________hands! I went up to Ms. Jones and thanked her for changing my life all those years ago. I__________that night that I was still, and would forever be, her student.
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2.A. typical B. practical C. special D. complicated
3.A. sold B. finished C. tested D. published
4.A. bought B. did C. wrote D. drew
5.A. madly B. bitterly C. shyly D. happily
6.A. choice B. retirement C. behavior D. change
7.A. though B. but C. unless D. because
8.A. on B. for C. about D. off
9.A. Regardless of B. According to C. Thanks to D. In terms of
10.A. belief B. idea C. motto D. talent
11.A. believed B. owed C. helped D. congratulated
12.A. gradually B. frequently C. constantly D. finally
13.A. going-up B. bringing-in C. going-away D. get-together
14.A. Still B. Instead C. Moreover D. Therefore
15.A. notice B. appointment C. decision D. speech
16.A. teachers B. kids C. writers D. schools
17.A. old B. proud C. smart D. greedy
18.A. let down B. play jokes on C. give up to D. put pressure on
19.A. clapped B. waved C. raised D. shook
20.A. heard B. hoped C. proved D. realized
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Some student’s also make 9.(friend) on the internet .But if you want to have a face-to-face 10.
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增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
I still remember the first day I come to this new school. Everything was new to me, what made me realize I was no longer a small child. I had to depend on me. Luckily, I made several good friend. Their interests were similar with mine. I had great English teacher, Maggie. She let me know the important of English. So I decided to learn English hardly. Although it was very difficult at first, but with the help of my teacher, I made rapidly progress. Just as the old saying goes, “Where there is a will, there is a way.”
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Can wine really improve our health? 1. (science) are beginning to say “Yes!”
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Paracelsus, the noted 16th-century Swiss physician 6. (write), “Wine is a food, a medicine and a poison it’s just a question of dose(剂量).” As with almost any food or drink, wine 7.(consume) in large doses can be harm to our health.
Most health officials agree that one or two four-ounce glasses of red wine per day can be8.(benefit) to men, while women should limit their consumption to one four-ounce serving per day.
Professor Roger Corder, has spent years studying the evidence of health benefits 9.red wine. In his new book, “The Wine Diet”, he says he 10.(convince) that most of us should include red wine in our everyday lifestyle.
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假定你是李华，你的美国朋友David作为交换生曾在你家居住。近期你校要举办以“ Foreigners Tell Chinese Stories”为主题的英语征文活动。请写一封邮件邀请他参加。要点如下：
1.截稿时间：2017年2月1日；
2.字数要求：500左右；
3.投稿邮箱：chinesestory2017@126.com。
注意：1.词数：100左右；
2.开头结尾已给出，不计入总词数。
Dear David，
Yours,
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假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均限一词；
2.只允许修改10处，多者（从第11处起）不计分。
The other day, some of my classmates and I took a bicycle trip along the “Ren Min Road”, where was specially built for people to relax ourselves. The scenery along the road was fascinating, with trees, flowers, hills and lakes on both side. We stopped by a lake for a rest, where a good many of people were playing happily. But something unpleasant catch our attention. There was rubbish here or there, and there were many plastic bags and bottles floated on the surface of the lake. Such beautiful place was so serious polluted. What a shame! In the end, we couldn’t help collecting the rubbish after we left.
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He admitted that he had tried to _____ the shop during the night but had got stuck in the chimney.
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