The chances of discovering life on Neptune are about a million . A. at one B. for one C. to one D. against one 题目和参考答案——青夏教育精英家教网—

题目内容

The chances of discovering life on Neptune are about a million _____.

A. at one B. for one C. to one D. against one

解析:

a million to one百万分之一，意为“几乎没有什么可能”。

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请阅读以下申请者的信息，然后匹配申请者和他/她拟要的申请意向：

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申请者选择意向

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57．David

58．Susan

59．John

60．May

PEOPLE who have had a painful experience may wish they could wipe the memory from their minds. Researchers at Johns Hopkins University, US, say that this may someday be possible.

A drug remains far off, but researchers have laid a foundation with their discovery that proteins can be removed from the brain’s fear center to cut memories forever.

Previous research had already shown that a special behavior therapy (治疗) could cut painful memories. But relapse (复发) was possible because the memory hadn’t necessarily disappeared.

By looking at that process, Richard Huganir and Roger Clem, two researchers from Johns Hopkins University, discovered a “window of vulnerability (脆弱的窗口)” when proteins are created. The proteins help signals travel within the brain as painful memories are made. Because the proteins are unstable, they can be easily removed with drugs or behavior therapy to cut memories.

Researchers used mice to find the window, but think the process would be the same in humans. They used electric shocks to make the mice fear a certain sound. The sound triggered (触发) the creation of the proteins, called calcium-permeable (钙通透性) AMPARS, which formed for a day or two in the fear centers of the mice’s brains.

The researchers are working on ways to reopen the window by recalling (唤醒) the painful memory and using drugs to remove the protein. They published their report online last month in Science Express.

Their research has drawn interest and concern from experts in mental healthcare.

Kate Farinholt, a mental health expert with the National Alliance on Mental Illness, Maryland, US, said many people suffering from a painful event might benefit from erasing a memory. “Erasing a memory and then everything bad built on that is an amazing idea, and I can see all sorts of potential ,” she said.

But there are a lot of unanswered questions, too.

“Completely deleting a memory is a little scary. How do you remove a memory without removing a part of someone’s life,” Farinholt said. “And is it best to do that, considering that people grow and learn from their experiences?”

1.What have researchers at Johns Hopkins University found recently?

A. A new drug to erase painful memories from human brains.

B. A special behavior therapy to erase painful memories.

C. Removing certain proteins from the brain can wipe painful memories.

D. Erasing memory damages a patient’s brain functions.

2.What makes it possible to erase painful memories according to Paragraph 4?

A. The way the brain cells are created.

B. The unstable character of the proteins in the brain.

C. The strength of the signals the proteins send.

D. The drugs that can stop the formation of memories.

3.Which of the following shows the stages of the process done on mice?

a. removal of fear proteins b. making mice fear a certain sound

c. fear proteins created in mice brains d. making mice recall painful memories

A. a-b-c-d B. d-a-c-b C. b-c-d-a D. c-b-d-a

4.What is Kate Farinholt’s opinion of the research?

A. People may lose the chance to learn from their bad experiences.

B. The research will be a great breakthrough in treating painful memories.

C. People could suffer long-term memory loss.

D. People could forget happy memories as well.

I am sure that everybody in his/her life has used computers. Nowadays you can feel their presence everywhere at home，at school，at work and they certainly make life easier．On the other hand，there are people who can’t work with them．

Anyway，I believe their presence is a good thing. Life with them seems easier, less difficult and more comfortable You can use them to choose your meal，to withdraw your money, and also save your time，because these operations are all controlled by computers. Therefore you can hardly imagine the modern world without them；the whole planet seems to be one big computer society．

Nevertheless，problems can often appear in this area, too．To have a computer means you have to be quite well－off and have the necessary skills to use it．However，think about questions like “Are computers so available for everyone, or rich and poor people，for people from villages and people from cities. Aren’t they too expensive？Is everyone able to learn how to use them and not everyone has the chance to access and work with them，how could everything in the future be dependent on them？”Therefore，I think our society will be split into two parts．One part will work with them and enjoy the benefits that computers can bring and the other part will be pushed out and will actually be far behind the other group．

Another question that bothers me is，on the one hand，computers are important and good things in our life，but they aren’t everything．They are good as a help at school，quite often as entertainment，especially for young people，as an necessary tool to help in research etc，but I think we shouldn’t be so dependent on them，because computers are only machines and machines can’t feel anything be human and sympathetic，and every action performed by computer can be interfered with another person，which could cause these machines to crash or work badly．

In conclusion，I would like to say I am not against computers．I use computers，too，but people should be wary all the time．

1.By saying “wary”（In the last paragraph）,the writer is trying to say “People should_______.

A. be strongly for the use of computers because of its convenience

B. be careful with computers that will also cause problems

C. master more necessary computer skills

D. not do something that causes computers to work badly

2.Which of the following best shows the structure of the passage？

3. In the third paragraph，the author presents his idea by________

A. asking questions for people to think about

B. giving examples to support his argument

C. raising questions and answering them

D. expressing his opinion directly

4. The writer’s main purpose in writing the passage is__________

A. to encourage us to use computers in our society

B. to advise us to say no to computers from now on

C. to remind us to care about the problems that computers bring.

D. to inform us that the computer has become a necessary part of our life

—I really thought I’d be offered the chance.

—Oh, well,,Vicky____.

A. you’re right B. best wishes

C. better luck next time D. congratulations

Humans are naturally drawn to other life forms and the worlds outside of our own. We take delight in the existence of creatures and even whole socicties beyond our everyday lives.

This sense of wonder is universal look at the efforts that scientists have made to find out whether life of some kind exists on Mars, and the popularity of fantasy(幻想) litcrature or movies like The lord of the Rings, This sense of wonder drous us to each other, to the world around us, and to the world of make-believe. But have we gone to far in creating worlds of fantasy that we are missing the phcasure of other worlds that alrewly exist all around us?

Human beings, as biologists have suggested, possess an inborn desire to connect with and understand other life forms, However, people, especially in big cities, often lead rather isolated lices. In a study of British schoolchildren, it was found that children bye age eight were much more familiar with hurmans for television shows and cideo games than with common wildlife. Without modern technology ,a amall pond could be an amazing world filled with strange and beautiful plants, insects,birds,and animals. When we lack meaningful interaction (交互) with the world around us, and sometimes ecen with our families and friends , we seek to understand and communicate with things that exist only in our imaginations or on a computer screen

The world of make-believe is not neccsanly bad, But when the world of famsity becomes the only outlet (出路) our sense of wonder ,then we are really missing something, We are missing a connection with the living world. Other wonderful worderful worlds exist all around us. But even more interesting is that if we look closely enough ,we can see that these worlds, in a broad sense , are really part of our own.

72.The popularity of The Lord of the rings proves

A.the close connestion between man and the fantasy world

B.the wonderful achievements of fantasy literature

C.the fine taste of moviegoers around the world

D.the general existence of the sense of curiosity

73.What can we infer from the underlineed sentence in Paragraph 3?

A.People are fra less familiar with the world of fantasy.

B.The world around us could serve as a sound of wonder.

C.The world of fantasy can be mirred by a small and lively pond.

D.Modern technology prevents us from developing our sense of wonder.

74. If our sense of wonder relics totally on the world of make-believe. we will_______.

A.fail to appreciate the joy in our lives

B.be confused by the world of make-believe

C.miss the chance to recognizc the fantas world

D.be tranped by other worlds exsting all around us

75. What is the main purpose of the passage?

A.To show us the hidden beauty in our world.

B.To warn us not to get lost in the fantasy wonder

C.To argue against the misuse of the sense of wonder

D.To discuss the influence of the world of make-believe

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