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When a young short-toed treecreeper (旋木雀)hatches from the egg, it is hairless, blind, and helpless. At birth it weighs 0.8 gram. Its manifestations (现象) of life are wholly out of tune with its quest (追求) to achieve a weight of 8 to 9 grams as quickly as possible, the latter being the weight of an adult treecreeper. To achieve this end the chick must eat, and it must also be warmer than its environment. It gets food from its parents, but warmth from its mother alone. In all this the youngster does not do much of an active nature. On the first day it begins to stretch itself, raising its neck high and opening its beak. It also responds to the feeding calls of its parents, which are made only if the chick does not open up. During the first few days, the chick cannot see, but it can tempt the parents to provide feedings by sending out a begging call.
Heartman (1953) took six of the seven young pied flycatchers (relatives of the treecreeper) out of their nest. Since there was now only one chick in the nest, the parents were not as quick to provide frequent feedings. The other six chicks, now hungry, were then brought near the nest so that their parents could hear all the seven even they could see only one. At once the rate (率) of attempted feedings doubled. The one chick in the nest could not handle the large amount of food, naturally, so the parents ended up eating some of it themselves.
1.How many different types of birds are referred to in the passage?
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2.According to the passage, which of the following is the most important in satisfying the baby treecreeper's need for warmth?
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A.The materials in the nest.
B.The mother bird.
C.The father bird.
D.The other chicks of the hatch.
3.The purpose of the parent treecreeper's feeding calls is to ________.
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A.note the need for food
B.warn the babies against its enemy
C.increase the variety of food
D.get the baby to open its mouth
4.Which of the following helps newborn treecreepers to gain weight?
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A.Begging noises.
B.Low body temperature.
C.Feathers.
D.Good eyesight.
5.It is most likely that the writer is using these paragraphs as ________.
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A.an introduction to a discussion of various kinds of birds
B.a broad description of bird development
C.a set of instruction for raising birds
D.examples of a general statement about bird feeding
查看习题详情和答案>>One day in September we were doing repair work on my parents’ old house to get it ready for my youngest daughter’s wedding. We had to 36 a great climbing plant that had grown 37 a roof beam(房梁),so that we could repair the roof and 38 the walls.
When my husband was taking the plant away, he found a 39 of a blackbird that had made its home in the leaves. He then 40 something 41 among that mass of earth and straw of the nest. He broke the earth around it into pieces with his finger tips and, to his 42 ,saw glittering gold. It was a child’s bracelet(手镯). He ran into the house to 43 me.
“You won’t believe that the 44 blackbirds not only steal the best fruit we 45 to feed on,” he said,“but they also want their children to 46 in a cradle(摇摆)of gold!”
When my daughter came over on the eve of the 47 ,we told her about this 48 occurrence.
“Don’t you remember, Mother?” she said with a loud 49 .“When I was eight, you gave me a bracelet that I 50 a few days later while out playing in the yard? It was this one!”
As the bracelet no longer 51 its owner and was dirty, I decided to take it into my safekeeping.
In December of the following year, the young couple’s baby son was baptized(受洗礼).Among the 52 the newborn baby received, I placed his mother’s bracelet, now shining like 53 . I hope that if my grandson 54 loses it, one of the 55 that live in my backyard is somewhere nearby.
36.A.remove B.cover C.grow D.water
37.A.beyond B.over C.across D.through
38.A.build B.paint C.rescue D.print
39.A.nest B.baby C.body D.egg
40.A.moved B.got C.picked D.noticed
41.A.nice B.colorful C.shiny D.special
42.A.horror B.surprise C.delight D.disappointment
43.A.ask B.tell C.show D.give
44.A.working B.cheating C.dreaming D.thieving
45.A.buy B.plant C.store D.collect
46.A.lie B.sing C.listen D.wait
47.A.party B.Christmas C.birthday D.wedding
48.A.important B.strange C.terrible D.funny
49.A.cry B.sigh C.laugh D.sound
50.A.hid B.threw C.lost D.broke
51.A.fitted B.satisfied C.matched D.interested
52.A.jewels B.toys C.clothes D.presents
53.A.attractive B.new C.modern D.golden
54.A.almost B.just C.even D.ever
55.A.blackbirds B.grandchildren C.neighbors D.mice
查看习题详情和答案>>One day in September we were doing repair work on my parents’ old house to get it ready for my youngest daughter’s wedding. We had to 36 a great climbing plant that had grown 37 a roof beam(房梁),so that we could repair the roof and 38 the walls.
When my husband was taking the plant away, he found a 39 of a blackbird that had made its home in the leaves. He then 40 something 41 among that mass of earth and straw of the nest. He broke the earth around it into pieces with his finger tips and, to his 42 ,saw glittering gold. It was a child’s bracelet(手镯). He ran into the house to 43 me.
“You won’t believe that the 44 blackbirds not only steal the best fruit we 45 to feed on,” he said,“but they also want their children to 46 in a cradle(摇摆)of gold!”
When my daughter came over on the eve of the 47 ,we told her about this 48 occurrence.
“Don’t you remember, Mother?” she said with a loud 49 .“When I was eight, you gave me a bracelet that I 50 a few days later while out playing in the yard? It was this one!”
As the bracelet no longer 51 its owner and was dirty, I decided to take it into my safekeeping.
In December of the following year, the young couple’s baby son was baptized(受洗礼).Among the 52 the newborn baby received, I placed his mother’s bracelet, now shining like 53 . I hope that if my grandson 54 loses it, one of the 55 that live in my backyard is somewhere nearby.
36.A.remove B.cover C.grow D.water
37.A.beyond B.over C.across D.through
38.A.build B.paint C.rescue D.print
39.A.nest B.baby C.body D.egg
40.A.moved B.got C.picked D.noticed
41.A.nice B.colorful C.shiny D.special
42.A.horror B.surprise C.delight D.disappointment
43.A.ask B.tell C.show D.give
44.A.working B.cheating C.dreaming D.thieving
45.A.buy B.plant C.store D.collect
46.A.lie B.sing C.listen D.wait
47.A.party B.Christmas C.birthday D.wedding
48.A.important B.strange C.terrible D.funny
49.A.cry B.sigh C.laugh D.sound
50.A.hid B.threw C.lost D.broke
51.A.fitted B.satisfied C.matched D.interested
52.A.jewels B.toys C.clothes D.presents
53.A.attractive B.new C.modern D.golden
54.A.almost B.just C.even D.ever
55.A.blackbirds B.grandchildren C.neighbors D.mice
查看习题详情和答案>>阅读下面短文,掌握其大意,从每题所给的A.B.C.D. 四个选项中,选出最佳选项,并在答题卡上将该选项涂黑。
One day in September we were doing repair work on my parents' old house to get it ready for my youngest daughter's wedding. We had to a great climbing plant that had grown a roof beam (房梁), so that we could repair the roof and the walls.
When my husband was taking the plant away, he found the of a blackbird that had made its home in the leaves. He then something among that mass of earth and straw of the nest. He broke the earth around it into pieces with his finger tips and, to his ,saw glittering gold. It was a child's bracelet (手镯). With it, he ran into the house to me. "You won't that the thieving blackbirds not only steal the best fruit we to feed on," he said, "but they also want their children to in a cradle of gold!"
When my daughter came over on the eve of the , we told her about this
occurrence.
"Don't you remember, Mother?" she said with a loud . "When I was eight, you gave me a bracelet that I it a few days later while out playing in the yard? It was this one!"
As the bracelet no longer its owner and was dirty, I decided to take it into my safekeeping.
In December of the following year, the young couple's baby son was baptized (受洗礼). Among the the newborn baby received, I placed his mother's bracelet, now shining like
. I hope that if my grandson loses it, one of the that live in my backyard is somewhere nearby.
A.remove B.cover C.grow D.water
A.beyond B.over C.across D.through
A.build B.paint C.rescue D.print
A.nest B.baby C.body D.egg
A.moved B.got C.picked D.noticed
A.nice B.colorful C.shiny D.special
A.horror B.surprise C.delight D.disappointment
A.ask B.tell C.show D.give
A.know B.hope C.consider D.believe
A.buy B.plant C.store D.collect
A.lie B.sing. C.listen D.wait
A.party B.Christmas C.birthday D.wedding
A.important B.strange C.terrible D.funny
A.cry B.sigh C.laugh D.sound
A.hid B.threw C.lost D.broke
A.fitted B.satisfied C.matched D.interested
A.jewels B.toys C.clothes D.presents
A.attractive B.new C.modern D.golden
A.certainly B.nearly C.surprisingly D.unluckily
A.blackbirdsB.grandchildren C.neighbors D.mice
查看习题详情和答案>>完形填空
One day in September we were doing repair work on my parents’ old house to get it ready for my youngest daughter’s wedding. We had to 1 a great climbing plant that had grown 2 a roof beam (房梁), so that we could repair the roof and 3 the walls.
When my husband was taking the plant away, he found the 4 of a blackbird that had made its home in the leaves. He then 5 something 6 among that mass of earth and straw of the nest. He broke the earth around it into pieces with his finger tips and, to his 7 , saw glittering gold. It was a child’s bracelet(手镯). He ran into the house to 8 me.
“You won’t believe that the 9 blackbirds not only steal the best fruit we 10 to feed on,” he said,“but they also want their children to 11 in a cradle of gold!”
When my daughter came over on the eve of the 12 , we told her about this 13 occurrence(发生的事).
“Don’t you remember ,mother?”she said with a loud 14 .“When I was eight, you gave me a bracelet that I 15 a few days later while out playing in the yard? It was this one!”
As the bracelet no longer 16 its owner and was dirty, I decided to take it into my safekeeping.
In December of the following year, the young couple’s baby son was baptized(受洗礼). Among the 17 the newborn baby received, I placed his mother’s bracelet, now shining like 18 . I hope that if my grandson 19 loses it, one of the 20 that live in my backyard is somewhere nearby.
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