单项选择题

A．Seaweed found in kelp(大海藻)beds.
B．Industrial waste.
C．Meteorties.
D．Underwater volcanoes.
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单项选择题
A．Yes, because she has a sum of money.B．Yes, because she wants to help him.C．No, because she has spent most of it.D．No, because she lent it to a friend.
A．Yes, because she has a sum of money.
B．Yes, because she wants to help him.
C．No, because she has spent most of it.
D．No, because she lent it to a friend.
单项选择题
A．Employ them as lab assistants.B．Teach classes at their high school.C．Help them with their studies.D．Pay them for participating in the study.
A．Employ them as lab assistants.
B．Teach classes at their high school.
C．Help them with their studies.
D．Pay them for participating in the study.
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