Coral reefs(珊 瑚 礁)are not just beautiful to look at，but also very useful．They shelter nearly 25％ of ocean life and provide food for billions of people．However, like many other species，this amazing ecosystem(生态系统)is in danger of dying out!
There are two main reasons for the destruction—the rising carbon dioxide levels caused by global warming as well as human influences like bottom operation．While not much can be done about the former，the loss caused by the latter can be reduced．
Bottom operation involves dropping nets to the ocean bed and then dragging them up when filled with fish．This action damaged the ocean floor，causing the coral branches to separate from the reefs．While that is very discouraging，the good news is that if these branches are found quickly，they can be saved．At present，that work is being performed by volunteer divers. But the method has only limited success because they cannot stay long underwater, nor reach depths of over 200 meters where some of the deep-sea coral grows．
However，this is not the case for Coral bots—the robots that can constantly seek out broken branches．A team of ‘coral bots’，each individually working to simple rules will piece together’ damaged bits of coral, allowing them to regrow. They are programmed to be able to distinguish between other things and the coral．The robots work together in groups，similar to bees．If one coralbot is damaged then the others will still be able to complete the task．
Dr Lea-Anne Henry said：“The project of using coral bots offers us the possibility to restore(修复)the function of reefs．It is in the final stage of testing．Once ready, the researchers hope to build hundreds of them and use them effectively in the waters off Scotland and then hopefully in the oceans across the world．”Which of the following is a cause of the danger that coral reefs are facing?
| A．The appearance of new creatures． |
| B．The seriously polluted sea water． |
| C．The activities of volunteer divers． |
| D．Human activities like bottom operation． |
Compared with volunteer divers，coralbots ______________．
| A．can stay longer underwater |
| B．must work as bees do |
| C．can distinguish what is coral |
| D．can never be damaged |
What does the underlined word“them”in the last paragraph refer to?
| A．Coralbots． | B．Broken branches． |
| C．working bees． | D．Bits of coral． |
We can infer from the passage that _______________．
| A．bottom operation has affected most underwater creatures |
| B．broken branches of coral can regrow if saved in time |
| C．hundreds of the coralbots have worked well in the oceans |
| D．with the coralbots all damaged coral reefs can be restored |
阅读下列短文，从每题所给的四个选项 （A 、B 、C 和 D ）中，选出最佳选项。
Arriving in Sydney on his own from India, my husband , Rashid, stayed in a hotel for a short time while looking for a short time while looking for a house for me and our children．
During the first week of his stay, he went out one day to do some shopping．He came back in the late afternoon to discover that his suitcase was gone．He was extremely worried as the suitcase had all his important papers, including his passport．
He reported the case to the police and then sat there，lost and lonely in strange city, thinking of the terrible troubles of getting all the paperwork organized again from a distant country while trying to settle down in a new one．
Late in the evening, the phone rang．It was a stranger．He was trying to pronounce my husband’s name and was asking him a lot of questions．Then he said they had found a pile of papers in their trash can（垃圾桶）that had been left out on the footpath．
My husband rushed to their home to find a kind family holding all his papers and documents．Their young daughter had gone to the trash can and found a pile of unfamiliar papers．Her parents had carefully sorted them out, although they had found mainly foreign addresses on most of the documents．At last they had seen a half-written letter in the pile in which my husband had given his new telephone number to a friend．
That family not only restored the important documents to us that day but also restored our faith and trust in people．We still remember their kindness and often send a warm wish their way．
What did Rashid plan to do after his arrival in Sydney?
| A．Go shopping |
| B．Find a house |
| C．Join his family |
| D．Take a vacation |
The girl’s parents got Rashid’s phone number from_______．
| A．a friend of his family |
| B．a Sydney policeman |
| C．a letter in his papers |
| D．a stranger in Sydney |
What does the underlined word “restored” in the last paragraph mean?
| A．Showed |
| B．Sent out |
| C．Delivered |
| D．Gave back |
Which of the following can be the best title for the text?
| A．From India to Australia． |
| B．Living in a a New Country． |
| C．Turning Trash to Treasure |
| D．In Search of New Friends． |
“We need carbohydrates, protein and fat — they are like the wood in the fireplace．The vitamins and minerals are like the match, the spark, for the fuel,” she explains．“We need them all, but in a very different proportions．And if the fuel isn’t there, the spark is useless.”
From the first paragraph we know that working women .
| A．think cooking is especially complicated |
| B．do not share the same views with registered dietitians |
| C．are busy and not interested in cooking |
| D．are likely to eat healthfully |
Orange juice is different from orange drink in that .
| A．it contains only a small percentage of real juice |
| B．it is natural, nutritious and prepared from real oranges |
| C．it is largely orange-colored sugar water |
| D．it produces nothing but calories |
In Paragraph 4, “a fruitless search” means .
| A．an effort with no results |
| B．a search for a diet without fruits |
| C．a research on fruitless diet |
| D．a diet serving as medicine |
Justin Bieber may have millions of fans worldwide, but Russia’s bears don’t appear to admire the pop singer’s music --- which proved fortunate for one lucky fisherman.
Igor Vorozhbitsyn had his life saved by a Justin Bieber ringtone, when his mobile phone went off during a dangerous attack by a brown bear.
The 42-year-old was attacked as he was walking to a favourite fishing spot in northern Russia’s Yakutia Republic and firmly believed that he was going to be killed.
Wildlife experts believe the ringtone must have frightened the bear into stopping its attack.
‘Sometimes a sharp shock can stop an angry bear in its attack and that ringtone would be a very unexpected sound for a bear,’ explained one．
Mr Vorozhbitsyn suffered from cuts and severe wounds and was rescued when he was found by other fishermen after using the phone to call for help.
Mr Vorozhbitsyn ---now recovering from his wounds---explained: ‘I had parked my car and was walking towards the spot I’d marked out when there was a tremendous impact on my back and the bear was on top of me.’
‘I couldn’t believe my luck when the phone went off and it run away.’
‘I know that sort of ringtone isn’t to everyone’s taste but my granddaughter loaded it onto my phone for a joke,’ he added.
Adult brown bears can weigh as much as 600kg and have been known to kill wolves and even Siberian tigers.
Finally, this is a proof that Justin Bieber is unbearable
Igor Vorozhbitsyn was attacked when____.
| A．he was fishing at his favourite fishing spot. |
| B．he was walking towards his favourite fishing spot. |
| C．he was phoning his granddaughter. |
| D．he was driving to his favourite fishing spot. |
The bear stopped attacking because___.
| A．Justin Bieber came to rescue Igor Vorozhbitsyn. |
| B．Justin Bieber sang to it. |
| C．Justin Bieber’s ringtone was a sudden fright to it. |
| D．Igor Vorozhbitsyn’s mobile phone was a sudden fright to it. |
What is the writer’s attitude towards Justin Bieber?
| A．positive |
| B．negative |
| C．neutral (中立的) |
| D．not mentioned |
What does the last paragraph imply?
| A．Justin Bieber’s music is popular all over the world. |
| B．Justin Bieber’s music is life-saving. |
| C．Justin Bieber’s music is threatening. |
| D．Even bears cannot stand Justin Bieber’s music. |
American researchers found females are the more talkative sex because of a special “language protein” in the brain.
The study, conducted by neuroscientists(神经学家) and psychologist from the University of Maryland, concluded that women talked more because they had more of the Foxp2 protein．The research, published in the Journal of Neuroscience, found that higher levels were found among humans that were women but in rats that were males．Their findings came after it was previously claimed that ladies speak about 20,000 words a day – over 13,000 more than men．“This study is one of the first to report a sex difference in the expression of a language-associated protein in humans or animals,” said Prof Margaret McCarthy, who led the study．In their study, the researchers attempted to determine what might make male rats more vocal than their female friends．
They separated four-day-old rats from their mothers and then counted the number of times they cried out in the “ultrasonic（超声波的） range”, the frequencies higher than humans can hear, over five minutes．While both sexes called out hundreds of cries, the males called out twice as often, they found．But when the pups were returned to their mother’s cage, she fussed over her sons first．Tests conducted on the parts of the brain known to be associated with vocal calls showed the male pups have up to twice as much Foxp2 protein as the females．The researchers then increased the production in the brains of female pups and reduced it in males．This led to the female rats crying out more often and their mothers showing more interest to them．In contrast, males became less “talkative”.
The researchers then tested samples from ten children, aged between three and five, which showed that females had up to 30 per cent more of the Foxp2 protein than males, in a brain area key to language in humans.
“Based on our observations, we assume higher levels of Foxp2 in girls and higher levels of Foxp2 in male rats is an indication that Foxp2 protein levels are associated with the more communicative sex,” said Prof McCarthy.
“Our results imply Foxp2 as a component (成分)of the neurobiological basis of sex differences in vocal communication in mammals.”From the second paragraph, we can learn that ________.
| A．women always speak more words than men |
| B．men and male rats have low levels of language protein |
| C．women and male rats have similar levels of Foxp2 |
| D．McCarthy isn’t the first to find females more talkative |
The underlined phrase “fussed over” in the third paragraph probably means______.
| A．paid attention to |
| B．related to |
| C．put pressure on |
| D．counted on |
The researchers carried out the experiments on rats in order to _______.
| A．test which part of the brain is key to language in rats and humans |
| B．prove the levels of Foxp2 protein in humans and rats are different |
| C．determine the reason why female rats are more talkative than male rats |
| D．discover the association between Foxp2 protein and vocal communication |
Which of the following can be the best title for the passage?
| A．Tests on humans and rats |
| B．Why women are the talkative sex |
| C．Sex differences in Foxp2 protein |
| D．Foxp2 protein determines oral ability |
Do you remember the night when you took advantage of my 17-year-old neighbor who had to drive to pick up his sister from her dance lessons? Do you know how we all felt when he hit another car and killed the two people in the other car? He died the next morning too．His sister walked home from her dance lesson, and passed police cars and a crowd of people gathering on the sidewalk just two blocks away from the dance studio．She didn’t realize her brother was in the midst of it all．She never saw him again．And it’s all your fault.
I wish you’d walk out of my life forever．I don’t want anything to do with you．Look at all the pain you’ve caused．Sure, you’ve made people happy too from time to time．But the damage you’ve caused in the lives of millions is inexcusable．Stop luring (引诱) in the people I love．Stop hurting me, please.
Sincerely,
AnonymousWhat is author’s purpose in writing to alcohol?
| A．To introduce Mr．Alcohol to the readers |
| B．To describe the harm alcohol did to his family. |
| C．To show how much alcohol can hurt people. |
| D．To show the great fun alcohol can bring to people’s life. |
What did alcohol do to the author’s father?
| A．It made him crash into two other cars and took his life. |
| B．It made him drink too much and he had to get his stomach pumped. |
| C．It made him kill two other people when driving. |
| D．It made him get into a car accident and badly injure himself. |
The underlined phrase “were intrigued by” is closest in meaning to ________．
| A．were familiar with |
| B．were interested in |
| C．were disappointed with |
| D．were satisfied with |
What is the tone of the article?
| A．Critical |
| B．Doubtful |
| C．Unconcerned |
| D．Humorous |
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