The soldiers is asleep while a guard watches for the enemy．is改为 are．题目和参考答案——青夏教育精英家教网—

题目内容

5．The soldiers is asleep while a guard watches for the enemy．is改为 are．

分析一名守卫站岗的时候士兵们在睡觉．

解答 is 改为 are，考查主谓一致．soldiers是复数形式谓语动词也要用复数形式are．

点评主谓一致是高考的重要考点之一，解决此类题目要找准句子主语，判断句子主语究竟是单数还是复数．在英语句子里，谓语受主语支配，其动词必须和主语在人称和数上保持一致，这就叫主谓一致．寻其规律，大致可归纳为三个原则，即语法一致、逻辑意义一致和就近一致原则．

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15．No one knowswhatcaused the accident．

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13．Mother's Day is a holiday for mothers．It is celebrated（庆祝）in the United States，England，India and some other countries．In a short time，it becomes widely celebrated．Mother's day falls on the second Sunday in May．On that day，many people send gifts（礼物）of love to their mothers．
Those whose mothers are still living often wear a pink or red rose or carnation（康乃馨），while those whose mothers are dead wear a white one．
The idea of a day for mothers was first given by Miss Anna Jarvis of Philadelphia．As a result of her hard work，the celebration of the first American Mother's Day was held in Philadelphia on May 10，1908．Soon the holiday became popular all over the country and around the world．
In China，people do the same on the day for mothers．And，in some cities，people sometimes ask a song to be broadcast（广播） for his or her mother only．This might cost a little money for some of them，but，as it is said，"Love is invaluable．"
On May 8，1999，just the day before the Mother's Day that year，a Chinese mother was killed in criminal bombing（罪恶轰炸）．Her name is Shao Yanhuan，a heroic mother．All the Chinese will remember her forever．
25．Mother's Day．D
A．was given by Miss Anna Jarvis
B．is celebrated in the United Stated only
C．falls on May 10every year
D．is a holiday for mothers
26．What was the date of the Mother's Day in 1999？A
A．May 9 B．May 8．C．May 7．D．May 10
27．On Mother's Day，people．C
A．send some flowers to their mothers．
B．wear a pink or red rose or carnation
C．send gifts of love to their mothers
D．wear a white flower．
28．Maybe you've known the criminal bombing，which of the following ideas do you agree to？D
A．Shao Yunhuan is a heroic mother．
B．A Chinese mother is the same as an American mother．
C．The bombing cannot get away with the crime （难逃罪责）．
D．All of the above．

20．Easy Ways to Keep Your Brain Sharp
Everyone is forgetful，but as we age，we start to feel like our brains are slowing down a bit-and that can be a very annoying thing．（36）FRead on for some techniques worth trying．
1．（37）A
People who regularly made plans and looked forward to upcoming events had a 50percent reduced chance of Alzheimer's disease （早老性痴呆症），according to a recent study．（38）ESomething as simple as setting a goal to have a weekly coffee date with a friend will do．There's evidence that people who have a purpose in life or who are working on long or short-term goals appear to do better．In other words，keep your brain looking forward．
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Take a Spanish class online，join a drawing club，or learn to play cards．A study found t hat mental stimulation （刺激） limits the weakening effects of aging on memory and the mind．But the best thing for your brain is when you learn something new and are physically active at the same time．（40）COr go dancing with your friends．
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B．This can be especially harmful to the aged．
C．It should be something like learning gardening．
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G．In other words，when you take care of your body，you take care of your brain．

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25．According to the passage，the Tarahumara Indian tribeC．
A．settles in Africa
B．lives in a desert
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A．his friends'suggestions
B．his childhood dreams
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A．start
B．prepare
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28．What would be the best title for the passage？D
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Other air-breathing animals also suffer this decompression （减压） sickness if they surface too fast：whales，for example．And so，long ago，did ichthyosaurs（鱼龙）．That these ancient sea animals got the bends can be seen from their bones．If bubbles of nitrogen form inside the bone they can cut off its blood supply．This kills the cells in the bone，and consequently weakens it，sometimes to the point of collapse．Fossil （化石） bones that have caved in on themselves are thus a sign that the animal once had the bends．
Bruce Rothschild of the University of Kansas knew all this when he began a study of ichthyosaur bones to find out how widespread the problem was in the past．What he particularly wanted to investigate was how ichthyosaurs adapted to the problem of decompression over the 150million years．To this end，he and his colleagues traveled the world's natural-history museums，looking at hundreds of ichthyosaurs from the Triassic（三叠纪） period and from the later Jurassic（侏罗纪） and Cretaceous（白垩纪） periods．
When he started，he assumed that signs of the bends would be rarer in younger fossils，reflecting their gradual evolution（进化）of measures to deal with decompression．Instead，he was astonished to discover the opposite．More than 15% of Jurassic and Cretaceous ichthyosaurs had suffered the bends before they died，but not a single Triassic specimen （标本） showed evidence of that sort of injury．
If ichthyosaurs did evolve an anti-decompression means，they clearly did so quickly-and，most strangely，they lost it afterwards．But that is not what Dr Rothschild thinks happened．He suspects it was evolution in other animals that caused the change．
Whales that suffer the bends often do so because they have surfaced to escape a predator （捕食动物） such as a large shark．One of the features of Jurassic oceans was an abundance of large sharks and crocodiles，both of which were fond of ichthyosaur lunches．Triassic oceans，by contrast，were mercifully shark-and crocodile-free．In the Triassic，then，ichthyosaurs were top of the food chain．In the Jurassic and Cretaceous，they were prey （猎物） as well as predator-and often had to make a speedy exit as a result．
58．Which of the following is a typical symptom of the bends？A
A．A twisted body．
B．A gradual decrease in blood supply．
C．A sudden release of nitrogen in blood．
D．A drop in blood pressure．
59．The purpose of Rothschild's study is to seeB．
A．how often ichthyosaurs caught the bends
B．how ichthyosaurs adapted to decompression
C．why ichthyosaurs bent their bodies
D．when ichthyosaurs broke their bones
60．Rothschild's finding stated in Paragraph 4C．
A．confirmed his assumption
B．speeded up his research process
C．disagreed with his assumption
D．changed his research objectives
61．Rothschild might have concluded that ichthyosaursA．
A．failed to evolve an anti-decompression means
B．gradually developed measures against the bends
C．died out because of large sharks and crocodiles
D．evolved an anti-decompression means but soon lost it．

15．---I feel there is somethinglacking （lack） in my life．
---Yes．You need a goal．

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