52．The first paragraph shows the writer's ________.

　　A．love of baiji

　　B．eagerness to write the passage

　　C．anger for not having a baiji

　　D．dissatisfaction with our government

　　答案：A　推理判断题。根据第一段中用形容词graceful描述白鳍豚，可知作者喜爱白鳍豚。故选A项。

　　53．Which of the following countries didn't join the action to search for baiji?

　　A．England.

　　B．America.

　　C．Japan.

　　D．India.

　　答案：D　细节理解题。根据第二段第一句话“Since November 6, a team of scientists from China, Switzerland, the United Kingdom, the United States, Germany and Japan have been searching for any sign of the freshwater dolphin on the middle and lower sections of the river.”可知，印度没有参加寻找白鳍豚的行动。故选D项。

　　54．How many baiji dolphins were left by the end of last century?

　　A．400.

　　B．13.

　　C．At most 2.

　　D．2.

　　答案：C　细节理解题。根据第五段“Around 400 baiji were believed to be living in the Yangtze until the 1980s. A 1997 survey spotted 13. Two years later

　　their number was down to two.”可知，到上世纪末最多剩下两只白鳍豚。故选C项。

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