A recent study of ancient and modern elephants has  come up with the unexpected conclusion that the African elephant is divided into two distinct (不同的) species
The discovery was made by researchers at York and Harvard universities when they were examining the genetic relationship between the ancient woolly mammoth and mastodon to modern elephants—the Asian elephant, African forest elephant and African savanna elephant
Once they obtained DNA sequences (序列) from two fossils (化石),mammoths and mastodons the team compared them with DNA from modern elephants. They found to their amazement that modern forest and savanna elephants are as distinct from each other as Asian elephants and mammoths.
The scientists used detailed genetic analysis to prove that the African savanna elephants and the African forest elephants have been distinct species for several million years. The divergence of the two species took place around the time of the divergence of Asian elephants and woolly mammoths. This result amazed all the scientists.
There has long been debate in the scientific community that the two might be separate species but this is the most convincing scientific evidence so far that they are indeed different species.
Previously, many naturalists believed that African savanna elephants and African forest elephants were two populations of the same species despite the elephants’ significant size differences. The savanna elephant has an average shoulder height of 3.5metres while the forest elephant has an average shoulder height of 2.5metres. The savanna elephant weighs between six and seven tons, roughly double the weight of the forest elephant. But the fact that they look so different does not necessarily mean they are different species. However, the proof lay in the analysis of the DNA.
Alfred Roca, assistant professor in the department of Animal Sciences at the University of Minois, said, “We now have to treat the forest and savanna elephants as two different units for conservation purpose. Since 1950 all African elephants have been conserved as one species. Now that we know the forest and savanna elephants are two very distinct animals, the forest elephant should become a bigger priority (優(yōu)先)for conservation purpose .”
小題1:One of the fossils studied by the researchers is that of ________.
A.the Asian elephantB.the forest elephant
C.the savanna elephantD.the mastodon elephant
小題2:The underlined word “divergence” in paragraph 4means “________”
A.evolutionB.exhibitionC.separationD.examination
小題3:The researcher’s conclusion was based on a study of the African elephant’s ____________
A.DNAB.heightC.weightD.population
小題4: What were Alfred Roca’s words mainly about?
A.The conversation of African elephants.
B.The purpose of studying African elephants
C.The way to divide African elephants into two units
D.The reason for the distinction of African elephants
小題5: Which of the following can be the best title for the passage?
A.Naturalist’s Belief about Elephants.
B.Amazing Experiment about Elephants
C.An Unexpected Finding about Elephants
D.A Long scientific Debate about Elephants

小題1:D
小題2:C
小題3:A
小題4:A
小題5:C

小題1:fossils 定位,找到第三段第一句,有兩種fossils,mam和mas,選項(xiàng)D
小題2:文中divergence of the two species指代前文the Ase and the Afe have been distinct species, divergence與distinct同義替換,對(duì)應(yīng)選項(xiàng)C
小題3:conclusion, based on定位,找到倒數(shù)第二段最后一句lay in 與based on 同義替換,答案:A
小題4:AR定位,找到倒數(shù)第一段,從AR的話中,第一句for conservation purpose, 最后一句for conservation purpose確定A
小題5:文章首句點(diǎn)明全文主旨,答案:C
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科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

51---------
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A
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B.In 2005, Danica Patrick became the first woman to win an IndyCar race.
C.Ochoa is the first Hispanic woman to have gone aboard the space shuttle Discovery for the ride.
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小題1:
The underlined word “whiners” in paragraph 1 refers to those people who ________.
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小題2:
From what the author’s grandmother said, we can infer that ________.
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What is the purpose of the author in writing the passage?
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B.To tell us a story about her grandmother.
C.To show how to live one’s life to the fullest.
D.To tell us people’s different attitudes towards complaining.

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But as history shows,people grow tired of fads. From the 1900s to the 1990s,products with “2000”in their names became fashionable as the year was associated with all things advanced and modern. However,as we entered the new century,the trend inevitably disappeared.
小題1:
We can infer that the Independent’s “i”is aimed at _______.
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小題2:

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One recent report about noise and concentration suggested that although a lot of people say that any noise disturbs their concentration, what really influences their ability to concentrate is a change in the level of noise. It goes on to say that a background noise which doesn't change too much (music, for example) may even help people to concentrate.
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According to this passage, the noise pollution______.
A.has become the worst in the countryside
B.has become better in big cities
C.has spread from cities to villages
D.has been controlled in modern cities
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What does background music refer to?
A.Music played while people are working.
B.Music played in the backyard.
C.Noise that continues while you’re listening to other noises.
D.Music used to help people to concentrate.
小題3:.
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