单选题It can be learned that the polar bear _____.Awas first considered by Siegel to be the iconic animal in 1998Bwas first proposed by Siegel to be the endangered species in 2004Cwas not qualified scientifically as the endangered species until 2005Dwas not officially under the government protection until 2008
单选题
It can be learned that the polar bear _____.
A
was first considered by Siegel to be the iconic animal in 1998
B
was first proposed by Siegel to be the endangered species in 2004
C
was not qualified scientifically as the endangered species until 2005
D
was not officially under the government protection until 2008
参考解析
解析：
第二段第八句说2005年Siegel申请将北极熊列为濒危物种名单，三年后美国内政部长宣布北极熊为“受威胁物种”。这算得上一个成功，但还不是完全意义上的成功，因为濒危物种比“受威胁物种”的等级更高。
第二段第八句说2005年Siegel申请将北极熊列为濒危物种名单，三年后美国内政部长宣布北极熊为“受威胁物种”。这算得上一个成功，但还不是完全意义上的成功，因为濒危物种比“受威胁物种”的等级更高。
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