单项选择题
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A.$60
B.$120.
C.$ 90.
D.$ 30.
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单项选择题
A.Anything.B.He lost his wallet this morning.C.Fine, thank you.D.Not at all.
A.Anything.
B.He lost his wallet this morning.
C.Fine, thank you.
D.Not at all.
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单项选择题
Any substance is made of atoms whether it is a solid, a liquid, or a gas.
A.由原子组成的物质不是固体,就是液体或气体。
B.任何物质,不论是固体、液体或气体,都由原子组成。
C.物质是固态,液态或气态,要看其原子构成。
D.物质是否由原子构成,是根据它是固态、液态还是气态来判断的。
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