摘要: Now that...,-既然/由于--.--. Now that we are alone, we can talk freely. 既然我们单独在一起.就无拘束地聊聊吧.

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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 (优先)for conservation purpose .”

1.

 One of the fossils studied by the researchers is that of ________.

A. the Asian elephant                  B. the forest elephant

C. the savanna elephant                D. the mastodon elephant

2.

The underlined word “divergence” in paragraph 4means “________”

A. evolution        B. exhibition       C. separation         D. examination

3.

 The researcher’s conclusion was based on a study of the African elephant’s ____________

A. DNA           B. height          C. weight            D. population

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

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

 

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第二节:完形填空(共20小题;每小题1.5分,满分30分)

    阅读下面短文,掌握其大意,然后从36-55各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

There was a rich foreign merchant who had 4 wives. He loved the 4th wife most and  36  her with best clothes and  37  her to delicious food.

  He also loved the 3rd wife very much. He’s very proud of her and always wanted to  38  his 3rd wife to his friends.

  He too, loved his 2nd wife. 39  the merchant faced some 40  , he always turned to his 2nd wife and she would always help him out.

  Now, the merchant’s first wife had made great  41  to his business. However, the merchant did not love her and although she loved him deeply, he hardly took notice of her.

  One day, the merchant fell ill. He knew that he was going to die  42  . He told himself, “ Now I have 4 wives with me. 43  when I die, I’ll be alone. How  44  I’ll be!”

  Thus, he asked the 4th wife, “ I  45 you most. Now that I’m dying will you 46  me and keep me company?” “No way!” replied the 4th wife and she walked away without another word.

  The  47  merchant then asked the 3rd wife, “ I have loved you so much for all my life. Will you follow me and keep me company?” “ 48  !” replied the 3rd wife. “ Life is so good over here! I’m going to 49  when you die!”

  He then asked the 2nd  wife, “ I 50 turned to you for help. Now I need your help again. Will you follow me and keep me company?” “I’m sorry, I can’t  51  you out this time!” replied the 2nd wife.

  Then a 52 pulled out, “ I’ll leave with you. I’ll follow you no matter  53  you go.” Broken-hearted, the merchant said, “ I should have taken much better  54  of you while I could have.”

 Actually, we all have 4 wives in our life: our body, our possessions, our friends, and our 55  . We should take good care of our soul all our life.

36 A wore                          B bought            C dressed                D shared

37 A gave                      B treated           C provided           D sent

38 A show off            B turn off            C show out               D turn out

39 A Wherever             B However           C Whether                D Whenever

40 A requests          B exercises           C problems               D duties

41 A friends              B contributions    C differences           D attempts

42 A soon                  B fast              C easily                  D bitterly

43 A So                          B And                         C But                                   D For

44 A lonely                    B friendly                  C lovely                          D lively

45 A respected                 B missed                   C wanted                           D loved

46 A like                    B catch                 C take                                 D follow

47 A sad                                 B hopeless                C anxious                           D lucky

48 A Yes               B No                           C Sure                                 D OK

49 A work                     B leave                 C remarry                          D stay

50 A seldom            B always                   C sometimes               D never

51 A advise            B demand                 C suggest                           D help

52 A voice                B sound                C shout                          D laugh

53 A how                       B where               C when                          D why

54 A advantage       B pity                          C care                                 D control

55 A wealth            B health               C power                        D soul

 

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