单项选择题

Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．Because the rule is out of date.
B．Because the rule is made for sick people.
C．Because the rule is based on the studies under extraordinary conditions.
D．Because the rule is based on the need of soldiers and patients.
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单项选择题
A．The presence of a particular file.B．The security level of the user.C．A certain time or date.D．The time when a file is used.
A．The presence of a particular file.
B．The security level of the user.
C．A certain time or date.
D．The time when a file is used.
单项选择题
A．By removing the bottom of the basket.B．By lowering the position of the basket.C．By simplifying the complex rules.D．By altering the size of the basket.
A．By removing the bottom of the basket.
B．By lowering the position of the basket.
C．By simplifying the complex rules.
D．By altering the size of the basket.
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