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答案:
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1.3. liquid/ solid
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2.What forms a solid to a liquid?
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3.All substances, _______ they are gaseous, liquid or solid, are made of atoms.
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4.Heat does not travel by convection in a solid, because the solid does not move, ______.A、so does a liquidB
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5.All matter,_____it is a gas, a liquid or a solid, expands as the temperature rises.
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6.Now we're better with solid and liquid wastes and air pollution.
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7.Gas radiation differs from solid and liquid radiation in that it has several characteristics including
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8.What is the process called when water changes from a liquid to a solid?
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9.For a solid or liquid fuel to________,点燃some of the fuel must first be heated to the temperature at which
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10.In a liquid state, water is ________ dense whereas in a solid state, water is ________ dense.