单项选择题

According to this passage, sleep is described as __________.

A．drowning in an ocean of darkness
B．undisturbed by tension or problems
C．a gradual parting from the real world
D．dependent only upon individual age and health
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单项选择题
One reason why children are unable to resist giving personal information on the Internet is that __________.
A．they feel they must follow an adult's orders
B．it is presented in connection with entertainment
C．they do not know that the information is going to be read by someone
D．due to their inability to distinguish an advertisement from a non-advertisement
单项选择题
Targeting children for advertising is controversial because children __________.
A．are unable to analyze and judge advertisements
B．are unable to give consent since they are too young
C．often give off information that may be dangerous to them
D．are not ready to evaluate advertisements or information requests
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