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CANBERRA(Reuters)—Australia’s kangaroos are genetically similar to humans and may have first evolved in China, Australian researchers said Tuesday.
Scientists said they had for the first time mapped the genetic code of the Australian marsupials(有袋类)and found much of it was similar to the genome for humans, the government backed Center of Excellence for Kangaroo Genomics said.
“There are a few differences, we have a few more of this, a few less of that, but they are the same genes and a lot of them are in the same order,”center Director Jenny Graves told reporters in Melbourne.
“We thought they’d be completely scrambled, but they’re not. There is great chunks of the human genome which is sitting right there in the kangaroo genome,” Graves said, according to AAP.
Humans and knagaroos last shared an ancestor at least 150 million years ago, the researchers found, while mice and humans separated and went in different ways from one another only 70 million years ago.
Kangaroos first evolved in China, but migrated across the America to Australia and Antarctica, they said.
“Kangaroos are hugely informative about what we were like 150 million years ago,” Graves said.
68.Where does the kangaroo first develop according the scientists?
A.In China.    B.In America. C.In Australia.       D.In Antarctica.
69.What does the passage mainly tell us?
A.How the Kangaroo first evolved.      B.Kangaroo’ genetic code have been mapped.
C.Kangaroos’genes are close to humans’.     D.Scientists did much research into Kangaroos.
70.What does the underlined word “scrambled” probably mean in the fourth paragraph?
A.Funny. B.Wrong.       C.Curious.      D.Right.

小题1:A
小题2:C
小题3:B
         
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科目:高中英语 来源:不详 题型:阅读理解

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From Wednesday to Saturday, continuous torrential rains, mudslides and floods hit Hunan, Guangdong, Guangxi, Guizhou, Jiangxi and Fujian, affecting more than 8.97 million people. The disasters have caused an overall economic loss of more than 2.9 billion yuan, according to the ministry. The ministry has sent rescue teams to the disaster areas to assist relief work. In Guangdong, heavy rains have killed 18 people and left four missing by 3:00 p.m. on Sunday, according to local authorities. A total of 1.72 million people were affected in the province.
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According to the local civil affairs bureau, 9,200 houses were knocked down and 75,181 hectares of crops were affected, resulting in 529 million yuan in direct economic losses. There are fewer rainstorms and the rain belt is moving out of Guangxi, but the water levels in major rivers will keep rising in next few days, according to the latest forecast of the region’s meteorological bureau on Sunday afternoon.
小题1: The underlined phrase “torn down” (para. 1) is closest in meaning to _______.
A.knocked downB.placed downC.set downD.torn open
小题2: In Meizhou city, 49 roads were damaged and by 7:00 p.m. only _______ roads can be used again after the repair work.
A.66 B.29C.20D.19
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A.Hubei is one of the provinces struck by the torrential rains.
B.The floods have caused a total loss of nearly 3 billion yuan.
C.13 people died in Guangdong province as a result of the floods.
D.The rain belt will remain in Guangxi in the next few days.
小题4: What’s the best title for this news story?
A.A Disaster.B.Heavy rains.C.A Flood.D.Heavy rains in Southern China.
小题5: What can we learn from the last paragraph?
A.The rainstorms are becoming stronger.
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C.The rainstorms are becoming less powerful.
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科目:高中英语 来源:不详 题型:阅读理解

February 28th, 2009 2:54 am GMT
I have to say that am shocked at just how bad the new music is. This cannot be the same band that produced great albums such as HTDAAB and ATYCLB! This is awful! They either do not care anymore, or have completely lost it. I never thought U2 would become irrelevant, but they have officially become one of those bands that you will now say, “Remember when they were great?”
----- Posted by Ronald Harris
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Total drivel, Mr Harris. The new album is great, far better than the safe, cynical HTDAAB and ATYCLB. U2 have become inventive again, like they were in the 1990s. thank goodness!
----- Posted by Dan
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Agree, Dan. The new album is the best since Actung Baby. Magnificent is an anthem in the waiting, Breathe is unbelievable, and Stand Up Comedy is absolutely outstanding----- to name just three! Loving the new sound, pure class as usual.
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科目:高中英语 来源:不详 题型:阅读理解

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A.A strong quake in Mexico, but no tsunami
B.A strong quake kills 2 in Mexico, frightens US states
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科目:高中英语 来源:不详 题型:阅读理解

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D.from February 19 to March 4, Beijing residents can set off fireworks twenty four hours every day.
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科目:高中英语 来源:不详 题型:阅读理解


(Xinhua)
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C.More than 2,600.      D.Less than 2,600.
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A.the five-day joint military drill is held in Russia’s Far East area.
B.China, Russia and other member states of the SCO, held three similar anti-terrorism exercises before this
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75. What can be the best title for the text?
A.Peace Mission-2009.              B.A Five-day Joint Military Drill.
C.Mission for Peace Tarets Terrorists.  D.Chinese Forces Ready for Sunday’s Joint Drill.

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