单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage.
What did Alexander Graham Bell hope to do when he went to the island

A．To have a vacation.
B．To establish his laboratory.
C．To visit members of his family.
D．To study deafness among the families.

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单项选择题

单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage. What did Alexander Graham Bell hope to do when he went to the island 您的浏览器不支持 audio 元素。