单项选择题

A．Upper class.
B．Lower class.
C．Working class.
D．Middle class.
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单项选择题
A．The rent.B．Redecorating the flat.C．How they can use the extra room.D．There is no landlady.
A．The rent.
B．Redecorating the flat.
C．How they can use the extra room.
D．There is no landlady.
填空题
treat 此题考查听特定信息的能力，解题的关键点在于分析出此空的成份为动词原型，taking a supplement to treat a virus意为“服用补剂以抗病毒”。
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