Because the four presidents________.

　　A．made great contributions to their country

　　B．were pioneers of US history

　　C．played an important role in the different periods of the American history

　　D．all of the above

　　59．What are the statues like?

　　A．They look like a 6-storied building.

　　B．They are like the great Sphinx of Egypt.

　　C．They are like true men standing there.

　　D．They are lifelike，looking ahead with fixed gazes.

　　60．For what groups of people across the world come to visit the Monument？They come________.

　　A．to learn the US pioneering spirit

　　B．to look back upon the history of the US.

　　C．to learn the art of sculpture

　　D．to enjoy the view of the Monument

　　第二节(共5 小题；每小题2分，满分10分)

　　61.

　　The World Health Organization(WHO)says that blindness and other visual problems are the leading causes of disability of older people in low-and middle-income countries.However，some researchers disagree with WHO on this point.They made a study and found that the leading cause is dementia (痴呆)．

　　62.

　　Dementia is a loss of intellectual ability that affects memorizing，learning and thinking abilites and other language skills.People with dementia may forget family members or not know what day it is.Sometimes they become angry or sad，and they can often hear voices，or see things that are actually not there.

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