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1、If、because(1)、I joined the folk art club I want to learn paper-cutting. （if/because）(2)、 you practise shadow puppetry often, you will be good at it. （if/because）(3)、The dance show was cancelled (取消) the main performer was ill. （if/because）(4)、We need to learn more about folk arts we want to protect them well. （if/because）(5)、 we don't pass on these arts to young people, they will disappear soon.
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2、 Creating powerful characters can make your story come life.
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3、 It's important for teenagers to learn to spend their free time wisely.
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4、 The mouse ran away it saw a big cat.
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5、 I want to be a (志愿者) at the folk art museum to help visitors learn about shadow puppetry (皮影戏).
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6、 Some people think handwritten letters are (过时的), but I find them more meaningful.
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7、 Our city has been much cleaner since this new recycling (回收利用) (计划，方案) started.
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8、 If we don't protect the environment, these beautiful flowers will (消失) soon.
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9、 Our (组) is planning a project to protect the old folk arts in our town.
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10、语法填空
Bees give us honey and help plants grow. But the little insects are facing (problem). A new report says wars all over the world are hurting bees live in the war areas. Countries at war might grow fewer kinds of crops. In farms with fewer sorts of crops, flowers only bloom for a short time. bees have trouble in finding food for the rest of the year.
Also, as people need more food, farmers are turning more forests farmlands. This (take) away homes which many living things need. Another big problem is the widespread (普遍的) use of pesticides (杀虫剂). It can kill bees and influence (they) health.
Air pollution is harmful (有害的) to bees, too. This makes it harder for them to live and grow. In dirty places, bees can die more (easy). People are (worry) about the high death rate of bees.
It's time for us to take action (save) bees. For example, we can use cleaner energy and grow more plants. There (be) many surprising facts about these small but great workers. We must protect bees because they are really important to nature.
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11、Traffic noise will disappear the cities if human activities stop.
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12、Sea animals can live peacefully the trouble of tourists.
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13、Many animals depend forests for food and shelter.
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14、I believe more people (admire) the artist after his new works are shown next month.
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15、The concert (cancel) at the last minute because the lead singer lost his voice.
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16、Visitors are not permitted (take) photos in this natural history museum.
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17、The Great Wall is one of the (wonder) of the world.
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18、Many (tourist) come to visit the old town every year.
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19、We can create an environment-friendly (社会) by cutting down the use of plastic.
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20、The temperature will (降低) in the evening.