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.
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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