题目内容

12.I had been looking forward to(61)visiting (visit)Las Vegas for a long time and my dream came true last weekend.
Las Vegas is(62)awonderful city.There are many of the largest(63)hotels (hotel)in the world.Las Vegas offers fun and excitement as well as the(64)natural(nature)beauty of the desert.It is a big desert,but no other places in America are(65)more attractive (attractive)than it now.
The weather in Las Vegas is too hot,(66)whichis disappointing.During the day,I stayed in the hotel and went out(67)to have(have) fun at night.I visited many places there,(68)butonly the water show in front of my hotel was the most(69)interesting(interest).
Some people say Las Vegas is(70)sucha good place that they can always have a great time there.

分析 文章讲述了作者去拉斯维加斯的经历.我一直盼望去拉斯维加斯,上个周末终于梦想成真.拉斯维加斯是一个很棒的城市,那里有世界上最大的旅馆,还有美丽的沙漠美景.只不过气候炎热,白天我呆在宾格,晚上再出去.有人说去拉斯维加斯的每个人都会玩得很开心.

解答 答案:61.visiting;考查动名词.句中look forward to盼望,后接名词或动名词.
62.a;考查冠词.句意表达的是泛指一个城市,要用不定冠词.  
63.hotels;考查名词.句中有many修饰,名词要用复数.  
64.natural;考查形容词.句中nature修饰名词beauty,要用形容词形式.    
65.more attractive;考查比较级.句中有than表示比较,要用形容词的比较级;attractive是多音节单词,要添加more来构成比较级.
66.which;考查连词.句中is disappointing修饰前面整个句子的内容,是一个非限制性定语从句;从句缺少主语,且表示一件事,要用which来引导.  
67.to have;考查短语搭配.go out to do sth出去做某事;不定式作目的状语. 
68.but;考查连词.句意表达的是转折,要用but来连接表示转折关系的并列句.   
69.interesting;考查形容词.句中有most表示最高级,且句意表达的是事物,要用现在分词构成的形容词形式.  
70.such;考查短语搭配.such…that…如此…以致…;such修饰名词或名词短语.

点评 语法填空题是考查学生的语言运用能力.解题时,要在理解文章的基础上,灵活运用语法知识,如词性,时态,名词单复数,连接词,代词,冠词等判断空白处应填写的内容.答完后,还要通读全文,核对所填单词形式是否正确,是否符合语境.

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Tyler was born infected with HIV:his mother was also infected.From the very beginning of his life,he was dependent on medications to enable him to survive.When he was five,he had a tube surgically inserted in a vein in his chest.This tube was connected to a pump,which he carried in a small backpack on his back.Medications were hooked up to this pump and were continuously supplied through this tube to his bloodstream.At times,he also needed supplemented oxygen to support his breathing.
Tyler wasn't willing to give up one single moment of his childhood to this deadly disease.It was not unusual to find him playing and racing around his backyard,wearing his medicine-laden backpack and dragging his tank of oxygen behind him in his little wagon.All of us who knew Tyler marveled at his pure joy in being alive and the energy it gave him.Tyler's mom often teased him by telling him that he moved so fast she needed to dress him in red.That way,when she peered through the window to check on him playing in the yard,she could quickly spot him.
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A few days before his death,Tyler beckoned me over to his hospital bed and whispered,"I might die soon.I'm not scared.When I die,please dress me in red.Mom promised she's coming to heaven,too.I'll be playing when she gets there,and I want to make sure she can find me."

64.What is the boy Tyler's attitude towards death?B
A.pessimistic.     B.optimistic.
C.sorrowful.       D.fearful.
65.Tyler requested the writer to dress him in red when he died simply becauseC.
A.red is a lucky color           
B.red might help to cure him
C.his mom could spot him easily  
D.he could find more mates by wearing red
66.Which of the following might serve as a possible title for this passage?D
A.My unusual profession.     B.A caring mother.
C.Mother and son.            D.Dying in red.
67.The underlined word dynamo in the fourth paragraph here meansB.
A.a promising and helpful youth
B.an extremely energetic person
C.a rare and beautiful flower
D.a magic and understanding superstar.
4.How do predators (猎食动物) affect populations of the prey (猎物) animals?The answer is not as simple as might be thought.The Moose(麋鹿) reached Isle Royale in Lake Superior by crossing over winter ice and bred freely there in isolation without predators.When wolves later reached the island,naturalists widely assumed that the wolves would play a key role in controlling the moose population.Careful studies have demonstrated,however,that this is not the case.The wolves eat mostly old or diseased animals that would not survive long anyway.In general,the moose population is controlled by food availability,disease and other factors rather than by wolves.
When experimental populations are set up under simple laboratory conditions,the predator often wipes out its prey and then becomes extinct itself.However,if safe areas like those prey animals have in the wild are provided,the prey population drops to low level but not extinction.Low prey population levels then provide inadequate food for the predators,causing the predator population to decrease.When this occurs,the prey population can rebound.In this situation the predator and prey population may continue in this cyclical pattern for some time.
Population cycles are characteristic of small mammals,and they sometimes appear to be brought about by predators.Ecologists studying hare populations have found that the North American snowshoe hare follows a roughly ten-year cycle.Its numbers fall tenfold to thirty in a typical cycle,and a hundredfold change can occur.Two factors appear to be generating the cycle:food plants and predators.
The preferred foods of snowshoe hares are tender willow branches.As the hare population increases,the quantity of these branches decreases,forcing the hares to feed on low-quality high-fiber food.Lower birth rates and low growth rates follow,so there is a corresponding decline in hare abundance.Once the hare population has declined,it takes two to three year for the quantity of branches to recover.
A key predator of the snowshoe hare is the Canada lynx.The Canada lynx shows a ten-year cycle of abundance(大量) that parallels the abundance cycle of hares.As hare numbers fall,so do lynx numbers,as their food supply decreased.
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73.The author uses the example of the moose and wolves on Isle Royale toB.
A.provide evidence that predators influence prey populations
B.question the belief in the effect of predators on prey populations
C.demonstrate predator population grows faster than that of the prey
D.prove that studies of isolated populations tend to be useful
74.The word"rebound"in the passage is closest in meaning toD.
A.React
B.Resist
C.Remain
D.Recover
75.Which of the following is true according to the passage?A
A.Laboratory results can't explain the changes in predator and prey populations of the wild.
B.The growth of hare population may lead to a corresponding increase in its birth rates.
C.The experimental environments can promote the growth of predator and prey populations.
D.The existence of a major predator in a community is a threat to the diversity of species.
76.What can we conclude from the passage about the cycle of the Canada lynx?C
A.When hare numbers decrease,lynx numbers increase.
B.It has a great effect on the number of snowshoe hare.
C.It closely follows the cycle of the snowshoe hare.
D.It is not directly related to the availability of lynx food.
77.What is the best title of this passage?B
A.What role predators play in keeping competitor species.
B.Whether predators have an impact on prey populations.
C.A study of the populations of the predator and prey animals.
D.Contributing factors of the changes in animal populations.

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