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1、 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
Chemical pesticides and artificial fertilisers have been in widespread use in farming since the middle of the 20th century, scientists have found that their long-term use can sometimes do harm to both the land the people's health. In most (country) some pesticides like DDT have been prohibited because of the damage (cause) to people and the environment.
(solve) the problem, some farmers have switched to organic farming. They use (nature) waste from animals as fertiliser instead of artificial fertilisers. By doing so, they make the soil in their fields (rich) in minerals than before. Many other methods are also used to produce rich soil. Farmers often change kind of crop grown in each field every year. In this way, some important minerals (put) back into the ground.
Some people would prefer to stop the use of man-made chemicals in agriculture (complete), but organic farming can't serve the high demand food around the world. So scientists have to find a suitable solution to the problem.
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2、 有确切的证据表明他是无辜的。
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3、 我建议下课之后把作业交上来，但有人却建议晚上交更好。
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4、 人们担心地是，智能手机被广泛地使用，很多孩子沉迷于其中。
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5、nbsp;为了丰富学生地词汇量，我别无选择，只能定期进行听写。
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6、 地震造成地破坏时如此严重以至于很多人无家可归。
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7、nbsp;解决这个问题地最好方式就是我们合作。
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8、 Although it has been centuries Jia Sixie died, Qi Min Yao Shu is still considered essential book in China's agricultural history.
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9、Then he gave advice ploughing, suggesting that the autumn ploughing should be at a (great) depth than the spring ploughing. He also suggested (change) crops to get better harvests every year.
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10、 Therefore, there is still a long way to find a suitable (solve) that puts sufficient food on the dinner table, while keeping people and the environment as (health) as possible.
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11、 What keeps them doing so is the fact chemical farming serves the high demand food around the world.
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12、 different crops are grown is because they put important minerals back into the ground, (make) it ready for the next batch of crops.
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13、 Organic farmers focus on (keep) their soil rich and free of disease through (nature) means.
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14、 As for chemical fertilisers, crops (grow) with them usually grow too fast to be rich nutrition.
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15、 In fact, some pesticides like DDT have (prohibit) in most countries because of the damage they cause people and the environment.
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16、 Over time, however, some scientists have found is that their long-term use can sometimes harm both the land people's health.
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17、 When they were first introduced, many farmers welcomed them as a great way (fight) crop disease and increase (produce).
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18、 What other important (方面) of agriculture do you want to know about?
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19、 In his travels, he observed that some farmers had much better o than others, so he decided to investigate the best way of (获得) good harvests.
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20、 Some people would prefer to stop the use of man-made chemicals in agriculture (完全地).