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1、Let's u the computer when we don't use it. It can save electricity.
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2、We can r plastic bottles and paper to protect the environment.
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3、Our actions are small but can make a big d in the world.
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4、After I wash the rice, I often r the water to water flowers.
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5、We should (reduce) the use of disposable bottles.
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6、People can (reuse) old cloth to make shopping bags.
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7、We use less (electricity) to save energy at home.
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8、 (few) trees lead to worse air in the city.
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9、We can see many (difference) between old and new towns.
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10、We can ____ power from the sea.A、get B、to get C、getting
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11、Solar power ____ clean energy for our daily life.A、provide B、provides C、providing
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12、We should ____ our shower time to save water resources.A、quicken B、quick C、quickly
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13、No real ____ have been found on Mars so far.A、alien B、aliens C、alien's
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14、There are ____ clean rivers in the countryside now than before.A、few B、fewer C、little
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15、What ____ energy?A、is B、are C、do
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16、Where ____ energy come from?A、do B、does C、is
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17、Energy ____ from sunlight.A、come B、comes C、coming
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18、We ____ save energy by turning off lights.A、can B、are C、is
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19、We ____ pollute the air.A、shouldn't B、can C、is
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20、选出下列单词中不同类的一项(1)、A、electricity B、energy C、reuse(2)、A、solar B、quick C、resource(3)、A、cool B、heat C、difference(4)、A、reduce B、change C、bottle(5)、A、shower B、machine C、fewer