单项选择题

This text is mainly about ______.

A．the health benefits of afternoon naps
B．the negative effects of sleep-deprivation on health and worker productivity
C．the importance of the siesta tradition in Spain and Latin America
D．the siesta tradition and its health benefits

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单项选择题

In the second sentence of Par

A．1, the underlined words "all this" refers to ______.A. the habit of nappingB. the standardizing of work hoursC. the decline of the siesta traditionD. the growth of global capitalism

单项选择题

This text mainly deals with ______.

A．the importance of using virtual reality in special education
B．the applications of virtual reality for special students
C．the advantages of virtual reality over conventional special education methods
D．the potential role of virtual reality in special education