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1、 The (化学的) reaction produces electricity.
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2、 We should follow the (规则) of using electricity.
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3、 He is an (工程师) who works in a big company.
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4、 The light (明亮的) the room.
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5、 We need to (节约) energy for our future.
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6、 The (电线) is used to carry electricity.
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7、 An (发明) is something new that people create.
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8、 Please be (小心的) with the knife.
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9、 We use (电) to make our lives more convenient.
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10、选词填空
provide, connect, produce, change, safety, different
(1)、We should pay attention to when using electricity.(2)、Power stations electricity for people.(3)、We can electricity into heat.(4)、Please the computer to the Internet.(5)、There are many between the two types of machines. -
11、 The ____ of electricity is very important in our daily life.A、use B、useful C、useless D、using
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12、 Monkey King is one of very famous symbols in Chinese ____ .A、advice B、rule C、order D、culture
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13、 The ground is wet. There ____.A、maybe rain B、maybe rainy C、may be rainy D、may be rain
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14、—Hi, Lucy. Can I come into your school freely?
—You must get ____ from my teacher before entering the school.
A、instruction B、permission C、invitation D、occasion -
15、 — It's too hot. ____ I swim in the lake near our home, mum?
—No, you ____. It's so dangerous. You'd better go to the swimming pool.
A、Could; couldn't B、Need; mustn't C、Must; needn't D、Could; can't -
16、 The power station provides electricity ____ the city.A、for B、with C、at D、in
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17、 The light bulb gives ____ bright light.A、up B、in C、out D、off
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18、 It is important for us ____ how to use electricity safely.A、learn B、learning C、to learn D、learned
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19、 The Internet ____ people all over the world. We can share information easily.A、separates B、divides C、connects D、breaks
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20、 We can't see electricity, ____ we can change it into different forms of energy.A、but B、and C、so D、or