According to the passage, however intelligent a robot may be, it ______.

单项选择题From the third paragraph, we can know that ______.

单项选择题According to the passage, why has human intelligence not been copied in the making of a robot

单项选择题The passage is a piece of ______.

单项选择题The last word of the passage addictive means ______.

单项选择题According to the passage, all of the following are advisable to older adults for a fitness program except ______.