单项选择题

A．It has different color.
B．It has air inside.
C．Sediment gets stirred up and mixes with water.
D．It’s not mentioned in the conversation.
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单项选择题
A．She finds her handbag missing.B．She forgets where she put the keys;C．She can’t find her keys.D．She left her keys in the office.
A．She finds her handbag missing.
B．She forgets where she put the keys;
C．She can’t find her keys.
D．She left her keys in the office.
单项选择题
A．By foreigners.B．By the deaf or hearing-impaired.C．By blind peopleD．By ordinary people.
A．By foreigners.
B．By the deaf or hearing-impaired.
C．By blind people
D．By ordinary people.
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