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The taller children should stand at the back _____ everyone can see.
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A.so that |
B.in order to |
C.so as to |
D.now that |
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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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______ his timely help, Kate overcame the hardship at last.
|
A.Now that |
B.Thanks to |
C.Since |
D.Because |
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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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Now that the forest was destroyed by a big fire, a large ________of trees ______ to be planted on the mountain.
|
A.number; has |
B.quantity; has |
C.amount; have |
D.sum; have |
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