4．The idea that animals can sense earthquakes is a popular one，and stories about animals'strange behavior before earthquakes have been told for centuries．Catfish moving violently，chickens that stop laying eggs and bees leaving their hive in a panic have been reported．Countless pet owners claimed to have witnessed their cats and dogs acting strangely before the ground shook-barking or whining（哀叫） for no reason，or showing signs of nervousness and restlessness．
Can humans use animals as earthquake detectors（探测器）？Debate over whether or not animals can truly sense earthquakes has not solved the question．Support for the idea that animals can sense earthquakes includes studies which suggest that animals may be able to feel the Earth vibrate（振动） before humans．Other ideas suggest that animals may sense electrical changes in the air or gas released from the Earth which could be indicators（预示） of an earthquake．
However，other researchers think the animals'ability is very doubtful．Some scientists feel that there is no strong scientific evidence to support the idea that animals can sense earthquakes．They say that it is difficult to develop a controlled study which can connect a specific animal behavior with an earthquake occurrence．They suggest that human psychology may have an effect on pet owners，as they may want to attribute（归于） powers of sensing earthquakes to their animals．Others have also pointed out that animals react to so many things-being hungry，defending their land，mating，enemies…And if an earthquake can shake millions of people，it is likely that a few of their pets will，by chance，be acting strangely before an earthquake．
Whether or not animals can sense earthquakes before humans do remains to be seen．
Can humans use animals as earthquake detectors（探测器）？Debate over whether or not animals can truly sense earthquakes has not solved the question．Support for the idea that animals can sense earthquakes includes studies which suggest that animals may be able to feel the Earth vibrate（振动） before humans．Other ideas suggest that animals may sense electrical changes in the air or gas released from the Earth which could be indicators（预示） of an earthquake．
However，other researchers think the animals'ability is very doubtful．Some scientists feel that there is no strong scientific evidence to support the idea that animals can sense earthquakes．They say that it is difficult to develop a controlled study which can connect a specific animal behavior with an earthquake occurrence．They suggest that human psychology may have an effect on pet owners，as they may want to attribute（归于） powers of sensing earthquakes to their animals．Others have also pointed out that animals react to so many things-being hungry，defending their land，mating，enemies…And if an earthquake can shake millions of people，it is likely that a few of their pets will，by chance，be acting strangely before an earthquake．
Whether or not animals can sense earthquakes before humans do remains to be seen．
| Phenomenon | Animals（71）behave/actstrangely before earthquakes． | |
| Examples | Catfish move violentl y，chickens stop laying eggs and bees（72）leavetheir hive． Cats and dogs feel（73）nervous and restless． | |
| Different （74）opinions/views/ideasabout the mystery | Some researchers support it． | Some researchers （75）doubtit． |
| Arguments | Animals can feel the Earth's vibration（76）ahead of humans． Animals can sense electrical changes in the air or gas． | It's difficult to conduct a study on the （77）connectionbetween animals'behavior and earthquakes． Pet owners may be （78）affected by their psychology． Many things can（79）result in animals'strange behavior． |
| （80）Conclusion | Whether or not animals can sense earthquakes is unknown． | |
20．In January 2014，when Luigi Quintos，54，held his newborn grandson，Ayden，for the first time，the baby weighed just over a pound．Ayden had been （41）D two months premature （早产的），and doctors thought he（42）A not make it．Shocked，Luigi turned to art to （43）A himself．He had been drawing portraits of people off and on （44）C grade school．
This time，Luigi（45）C a portrait of Ayden with his parents-Luigi's son and daughter-in-law-gazing （46）D at him．"It was my way of making sure they'd always be together，"he says．
（47）A five months in intensive care，Ayden pulled through．Inspired by the good news，Luigi set up a Facebook page，Priceless Images，（48）Dhe offered to draw portraits of other kids who were sick or had died．"I thought my work might offer （49）B，"he said．
Within days，requests （50）B his inbox（收件箱）．Often，parents e-mail Luigi a photo of （51）C child along with a description of his or her illness or how the child died．Sometimes they （52）Athat the artist exclude （不包括） oxygen tubes and wires that appear in the （53）B，and one family asked for their child's eyes to be drawn open，an image they never got to see in （54）D life．
Each drawing （55）CLuigi，who works as a courier driver in Salem，Oregon，a few hours．（56）B he's done，he mails an 11-by-14-inch portrait to the parents and（57）B a version of the drawing on his Facebook page．
（58）D，Luigi has completed 450portraits，with another 350on the （59）C list．But Luigi doesn't mind the backlog （积压）．"The drawings give families （60）D they can hold on to，"he said．
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This time，Luigi（45）C a portrait of Ayden with his parents-Luigi's son and daughter-in-law-gazing （46）D at him．"It was my way of making sure they'd always be together，"he says．
（47）A five months in intensive care，Ayden pulled through．Inspired by the good news，Luigi set up a Facebook page，Priceless Images，（48）Dhe offered to draw portraits of other kids who were sick or had died．"I thought my work might offer （49）B，"he said．
Within days，requests （50）B his inbox（收件箱）．Often，parents e-mail Luigi a photo of （51）C child along with a description of his or her illness or how the child died．Sometimes they （52）Athat the artist exclude （不包括） oxygen tubes and wires that appear in the （53）B，and one family asked for their child's eyes to be drawn open，an image they never got to see in （54）D life．
Each drawing （55）CLuigi，who works as a courier driver in Salem，Oregon，a few hours．（56）B he's done，he mails an 11-by-14-inch portrait to the parents and（57）B a version of the drawing on his Facebook page．
（58）D，Luigi has completed 450portraits，with another 350on the （59）C list．But Luigi doesn't mind the backlog （积压）．"The drawings give families （60）D they can hold on to，"he said．
| 41．A．dead | B．missing | C．homeless | D．born |
| 42．A．might | B．must | C．should | D．would |
| 43．A．calm | B．comfort | C．excite | D．save |
| 44．A．as | B．before | C．since | D．for |
| 45．A．made | B．carve | C．drew | D．cut |
| 46．A．sideways | B．far | C．up | D．down |
| 47．A．After | B．Before | C．Until | D．Although |
| 48．A．why | B．which | C．when | D．where |
| 49．A．awareness | B．comfort | C．sickness | D．pleasure |
| 50．A．crowded | B．filled | C．emptied | D．spread |
| 51．A．his | B．her | C．their | D．our |
| 52．A．request | B．command | C．order | D．propose |
| 53．A．book | B．photo | C．essay | D．description |
| 54．A．true | B．false | C．universal | D．real |
| 55．A．spends | B．costs | C．takes | D．pays |
| 56．A．While | B．When | C．What | D．How |
| 57．A．reads | B．posts | C．publishes | D．downloads |
| 58．A．At that time | B．In the meanwhile | C．In the future | D．To date |
| 59．A．hurrying | B．running | C．waiting | D．standing |
| 60．A．anything | B．nothing | C．none | D．Something |