题目内容
______ of potential danger on late night visits to ATMs, she didn’t dare to go without his boy friend ______ her.
- A.Warned; accompanied
- B.Having warned; accompanying
- C.Warning; accompanied
- D.Having been warned; accompanying
试题分析：考查非谓语动词的用法，第一空填过去分词做状语，因为warn和逻辑主语she是被动关系，第二空填accompanying做宾语补足语，因为accompanying和修饰的宾语her boy friend是主动关系，句意是：被警告晚上去自动取款机很危险，没有男朋友陪同她不敢去。选D。
考点：考查非谓语动词的用法，
点评：首先要分析句子知道非谓语动词是做得什么成分，然后根据和修饰语的关系决定是现在分词还是过去分词或者不定式。
It s just a small, white envelope stuck among the branches of our Christmas tree．It has been there for the past 10 years or so．It all began because my husband Mike hated Christmas—the commercial aspects of Christmas-overspending．Knowing he felt this way, I decided one year to avoid the usual presents．The idea came in an unusual way．
Our son Kevin, who was 12 that year, was wrestling at the junior level at the school he attended; and shortly before Christmas, there was a match against a team sponsored by a church．These youngsters, dressed in ragged clothes, presenting a sharp contrast to our boys in their beautiful dresses and shoes．As the match began, I was alarmed to see that the other team was wrestling without headgear, a kind of light helmet designed to protect a wrestler's ears．It was a luxury that the poor team obviously could not afford．Well, we ended up defeating them．Mike, seated beside me, shook his head sadly, "
I wish just one of them could have won," he said．"They have a lot of potential, but losing like this could take the heart right out of them．" That's when the idea for his present came．That afternoon, I went to a local sporting goods store and bought wrestling headgear and shoes for the youngsters and sent them anonymously （匿名地） to the church．On Christmas Eve? I placed the envelope on the tree, the note inside telling Mike what I had done and that this was his gift from me．His smile was the brightest thing about Christmas that year and in the following years．
For each Christmas, I followed the tradition．The envelope became the highlight of our Christmas．It was always the last thing opened on Christmas morning and our children, ignoring their new toys, would stand with wide-eyed expectation as their dad lifted the envelope from the tree to show its contents．As the children grew, they joined．
May we all remember the reason for Christmas, and the true Christmas spirit this year and always．God bless梡ass this along to your friends and loved ones．
【小题1】The author avoids usual Christmas presents because her husband _____．
| A．likes cheap Christmas presents |
| B．likes expensive Christmas presents |
| C．dislikes spending much on large Christmas presents |
| D．dislikes spending much on unmeaningful Christmas gifts |
| A．something of poor quality | B．something abundant |
| C．something strange | D．something expensive |
| A．modest and mature | B．kind and practical |
| C．strong-willed and vain | D．optimistic and outgoing |
| A．Preparing gifts． | B．Exchanging gifts． |
| C．Opening the envelope． | D．Writing Christmas cards． |
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?”
【小题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. |
| 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. |
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 |
| 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. |