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China has developed a technology that is...

China has developed a technology that is able to transform desert lands into available soil. The technology 1. (develop) several years ago by researchers at Chongqing Jiaotong University. They invented a paste(黏合剂)2. (make) of a material found in plant cell walls that, when mixed 3. sand, is able to keep water, nutrients, and air.

According to CGTN, Chinese scientists have achieved success in growing crops in areas with bad conditions caused by lack of rain and 4. (extreme) hot temperatures. One particular area is in a desert in North China’s Inner Mongolia. Over 70 kinds of crops are growing there. Many are not planted by humans but they just grow 5. (they) . And the costs of artificial materials and machines for transforming sand into soil is much 6. (low) compared with regular methods. Now, nearly 500 acres of sand is being turned into farms producing corn, 7. (tomato) and sunflowers. A reforestation(重造森林)project is also currently in progress, 8. is set to reforest 50% of desert land in three years.

Researchers are looking into expanding their project this fall, with 9. plan to transform another 500 acres of desert. In the next few years, the scientists are 10. (confidence) that they can turn over 30,000 acres more into rich ground.

 

1. was developed 2. made 3. with 4. extremely 5. themselves 6. lower 7. tomatoes 8. which 9. a 10. confident 【解析】 本文是一篇说明文。中国已经开发出一种能把沙漠土地变成可用土壤的技术。这项技术是几年前由重庆交通大学的研究人员开发的。在接下来的几年里,科学家们相信他们可以把3万英亩土地变成肥沃的土地。 1.考查被动语态。句意:这项技术是几年前由重庆交通大学的研究人员开发的。句子主语The technology 和develop之间是被动关系,再根据several years ago可知句子用一般过去时态的被动语态,故答案为was developed。 2.考查过去分词作后置定语。句意:他们发明了一种由植物细胞壁中发现的一种材料制成的糊状物,这种材料与沙子混合后可以保持水分、营养和空气。此处a paste和make之间是一种被动关系,这里是过去分词做后置定语,故答案为made。 3.考查固定词组。句意:他们发明了一种由植物细胞壁中发现的一种材料制成的糊状物,这种材料与沙子混合后可以保持水分、营养和空气。mix---with---“把---和---混合在一起”,故答案为with。 4.考查副词。句意:据CGTN报道,中国科学家已经成功地在缺少雨水和极端高温的恶劣条件下种植农作物。此处hot是形容词,副词修饰形容词,故答案为extremely。 5.考查反身代词。句意:许多不是人类种植的,而是自己生长的。结合句意可知此处用反身代词,故答案为themselves。 6.考查比较级。句意:而人工材料和机器将沙子转化成土壤的成本比常规方法要低得多。much修饰比较级,结合句意可知答案为lower。 7.考查名词复数。句意:现在,将近500英亩的沙子正在变成种植玉米、西红柿和向日葵的农场。结合句意可知此处用名词复数,故答案为tomatoes。 8.考查定语从句。句意:一个重新造林项目目前也在进行中,该项目将在三年内重新造林50%的沙漠土地。此处project是先行词,指物,在后面的非限制性定语从句中作主语,故答案为which。 9.考查不定冠词。句意:研究人员正在考虑今年秋天扩大他们的项目,计划改造另外500英亩的沙漠。结合句意可知答案为a。 10.考查形容词。句意:在接下来的几年里,科学家们相信他们可以把3万英亩土地变成肥沃的土地。be动词后面用形容词作表语,故答案为confident。
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