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1、2025年高考英语二轮复习：15套热点完阅语法填空综合练习题汇编热点完阅语法填空综合训练（1）阅读理解AA new kind of hybrid （杂交的）wheat now available to American farmers may help reduce fears over genetically engineered crops.The new hybrid, developed by Chinese- owned agriculture company Syngenta, is being introduced as seed companies worldwide seek

2、 to increase production because of decreasing grain supplies. The product was created without genetic engineering. The first seeds to grow the wheat will be released on 2,000 to 2,800 hectares of American farmland next year.You may wonder about how hybrid wheat is made. Developers, or researchers, c

3、reate hybrid wheat by taking away the natural ability of plants to pollinate （对授粉）themselves. Instead, female wheat plants in a field are pollinated by male plants of a different line. The goal of the process is to create seeds that can produce bigger crops and better resist harmful environments. Th

4、e fertilized （受精的）female plant produces a new kind of hybrid. Using this hybrid technology permits researchers to choose the best elements from two parent seeds to produce new seeds containing the best characteristics of both.Farmers have grown hybrid corn since the 1930s. The growth improved crop s

5、izes, called yields, by increasing the plants resistance to things like insects and disease. Vegetables like onions, spinach and tomatoes are also grown from hybrid seeds.Seed companies said they used their experience launching hybrid corn and barley to develop hybrid wheat. Average corn yields incr

6、eased 600 percent from 1930 to the mid- 1990s. This result was partly helped by hybridization. Wheat saw an increase of two- and-a-half times, the US Department of Agriculture said. Researchers say hybrid wheat has taken longer to come to market because the development process is more costly and complex.It could be important to increase wheat yields while avoiding being linked to “GMO” development. GMO stands for genetically modified organism. Genetically modified wheat has

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