閱讀下面的短文。每篇短文的后面有五個問題，每個問題有四個備選答案。請根據短文的內容選擇最佳答案。每個試題計3分,共計15分。

　　Reports of cryptic species have increased dramatically over the past two decades with the advent of relatively inexpensive DNA sequencing technology.Markus Pfenninger and Klaus Schwenk，of the Goethe-Universitat，in Frankfurt1，Germany，analyzed all known data on cryptic animal species and discovered that they are found in equal proportions throughout all major branches of the animal kingdom and occur in equal numbers in all biogeographieal regions.

　　Im extremely surprised by their results, says Alex Smith of the University of Guelph2 in Ontario3，Canada.Its a call to arms to keep doing the broad kind of genetic studies that we are doing.

　　Examples of cryptic species include the African elephant. A 2001 study found the elephants were actually two genetically distinct，non-interbreeding species，the African bush elephant and the African elephant. The species are currently listed as vulnerable and threatened，respectively，by the World Conservation Union 4.

　　In the early 1900s misidentification of mosquito species based on morphology confused attempts to control malaria in Europe.Ultimately，what was thought to be a single species was actually made up of six sibling species，only three of which transmitted the disease.The basic unit in biology is always the species，and you have to know what you are dealing with, Pfenninger says.Much previous research is now no longer used，he says，because it is not clear what species was being studied.5kriptik5tAksCnp

　　biodiversity n.生物多樣性 taxonomic adj.分類

　　morphologyn.形態學 malaria n.瘧疾5reptail5sibliNp

　　temperateadj. 溫帶的

　　2. the University of Guelph：圭爾夫大學。該校成立于1964年，是一所公立的綜合性大學。在2005年加拿大綜合類大學評比中，圭爾夫大學名列第3名，是全加拿大最著名的高等學府之一。

　　4. the World Conservation Union：世界自然保護聯盟。全球最大、最重要的自然保護網絡機構，它集合了82個國家、111個政府機構、800多個非政府組織以及來自181個國家的約1萬多名科學家和專家，形成了世界環保領域里獨一無二的全球性合作關系。

　　A The results of the research can help the development of many other researchareas.

　　C The results of the research can help our understanding of infectious diseaseevolution.

　　2. What was scientists understanding of cryptic species?

　　B They were mostly found in insects find reptiles.

　　D Both B and C.

　　A Not yet.

　　C They will know the answer in another one or two years;

　　4. Which of the following about the African bush elephant and the African elephant is true?

　　B They are interbreeding species.

　　D They depend on each other for survival.

　　A identified only one mosquito species instead of six species.

　　C thought there was only one mosquito species.

　　答案與題解：

　　1. D 短文的第一段第二句的大意是，研究結果為廣泛的研究領域提供啟示，包括生物多樣性研究，還能幫助我們理解傳染疾病及其演變。所以，選項A、B、C都是正確的，它們不是答案。選項D的適者生存的內容文章中沒有提及，因此是本題的答案。

　　3. A 第三段和第五段提供了答案。第三段的倒數第二句中的Until...no one will know just how many cryptic species exist.其意思就是人們目前還不了解。第五段的最后一句也說明了研究者目前對此尚未了解。

　　5. A 短文最后一段告訴我們，由于對蚊子種類不了解，20世紀初期瘧疾曾肆虐歐洲，最終，科學家才了解到蚊子這一物種不是由一個種類而是由六個種類組成。所以，應該選擇A。

　　閱讀下面的短文。每篇短文的后面有五個問題，每個問題有四個備選答案。請根據短文的內容選擇最佳答案。每個試題計3分,共計15分。

　　Reports of cryptic species have increased dramatically over the past two decades with the advent of relatively inexpensive DNA sequencing technology.Markus Pfenninger and Klaus Schwenk，of the Goethe-Universitat，in Frankfurt1，Germany，analyzed all known data on cryptic animal species and discovered that they are found in equal proportions throughout all major branches of the animal kingdom and occur in equal numbers in all biogeographieal regions.

　　Im extremely surprised by their results, says Alex Smith of the University of Guelph2 in Ontario3，Canada.Its a call to arms to keep doing the broad kind of genetic studies that we are doing.

　　Examples of cryptic species include the African elephant. A 2001 study found the elephants were actually two genetically distinct，non-interbreeding species，the African bush elephant and the African elephant. The species are currently listed as vulnerable and threatened，respectively，by the World Conservation Union 4.

　　In the early 1900s misidentification of mosquito species based on morphology confused attempts to control malaria in Europe.Ultimately，what was thought to be a single species was actually made up of six sibling species，only three of which transmitted the disease.The basic unit in biology is always the species，and you have to know what you are dealing with, Pfenninger says.Much previous research is now no longer used，he says，because it is not clear what species was being studied.5kriptik5tAksCnp

　　biodiversity n.生物多樣性 taxonomic adj.分類

　　morphologyn.形態學 malaria n.瘧疾5reptail5sibliNp

　　temperateadj. 溫帶的

　　2. the University of Guelph：圭爾夫大學。該校成立于1964年，是一所公立的綜合性大學。在2005年加拿大綜合類大學評比中，圭爾夫大學名列第3名，是全加拿大最著名的高等學府之一。

　　4. the World Conservation Union：世界自然保護聯盟。全球最大、最重要的自然保護網絡機構，它集合了82個國家、111個政府機構、800多個非政府組織以及來自181個國家的約1萬多名科學家和專家，形成了世界環保領域里獨一無二的全球性合作關系。

　　A The results of the research can help the development of many other researchareas.

　　C The results of the research can help our understanding of infectious diseaseevolution.

　　2. What was scientists understanding of cryptic species?

　　B They were mostly found in insects find reptiles.

　　D Both B and C.

　　A Not yet.

　　C They will know the answer in another one or two years;

　　4. Which of the following about the African bush elephant and the African elephant is true?

　　B They are interbreeding species.

　　D They depend on each other for survival.

　　A identified only one mosquito species instead of six species.

　　C thought there was only one mosquito species.

　　答案與題解：

　　1. D 短文的第一段第二句的大意是，研究結果為廣泛的研究領域提供啟示，包括生物多樣性研究，還能幫助我們理解傳染疾病及其演變。所以，選項A、B、C都是正確的，它們不是答案。選項D的適者生存的內容文章中沒有提及，因此是本題的答案。

　　3. A 第三段和第五段提供了答案。第三段的倒數第二句中的Until...no one will know just how many cryptic species exist.其意思就是人們目前還不了解。第五段的最后一句也說明了研究者目前對此尚未了解。

　　5. A 短文最后一段告訴我們，由于對蚊子種類不了解，20世紀初期瘧疾曾肆虐歐洲，最終，科學家才了解到蚊子這一物種不是由一個種類而是由六個種類組成。所以，應該選擇A。