奇速英语官网—英语在线学习平台_让学英语更快乐_更快速

Farmers need a good way to deal with weeds (杂草). They want to grow healthy food and keep the soil clean. But the world is getting warmer, so weeds grow much faster. To kill the weeds, farmers spray (喷洒) more farm chemicals (农药). Too many chemicals, however, are bad for nature.

Here is a surprising fact. About 95% of these chemicals do not stay on weeds. Instead, <u>they</u> go into the soil or end up on plants. That means most of the chemicals don’t do their job. Spraying a whole field is expensive. It also wastes a lot of chemicals.

A company called Precision AI has a new idea. It uses AI drones. These small flying machines fly over the field. They check the plant types and spray only the weeds. This can cut chemical use by up to 90%.

Traditional farming uses big machines on the ground. They cost a lot, but farmers use them only a few weeks a year. The drones can work quickly and help farmers protect nature. This is a smart and green way to farm.

1.1. What makes weeds grow faster?

A Cleaner farm soil.

B The warmer weather.

C Smaller farm land.

D Fewer farm machines.

解析：选B。B 细节理解题。原文第一段明确提到“But the world is getting warmer, so weeds grow much faster.”，说明天气变暖使杂草生长更快，因此B项“The warmer weather”正确。A“更干净的农田土壤”文中只说农民想保持土壤干净，并不是杂草长得快的原因；C“更小的农田”和D“更少的农业机器”文中均未提及。故选B。

2.2. The underlined word “they” in Paragraph 2 refers to ________.

A chemicals

B weeds

C plants

D farmers

解析：选A。A 词义猜测题。根据第二段前句“About 95% of these chemicals do not stay on weeds. Instead, they go into the soil or end up on plants.”可知，they指代前句中的“these chemicals”，即农药/化学品，因此A项“chemicals”正确。B“杂草”不是进入土壤的主体；C“植物”是化学品最终附着的地方；D“农民”与句意无关。故选A。

3.3. What can AI drones do?

A Water the whole field.

B Kill all the plants.

C Find and spray weeds.

D Use more chemicals.

解析：选C。C 细节理解题。原文第三段明确说AI无人机“They check the plant types and spray only the weeds.”，即它们能识别并只喷洒杂草，因此C项“Find and spray weeds”正确。A“灌溉整片田地”文中未提；B“杀死所有植物”与“只喷杂草”相反；D“使用更多化学品”与原文“cut chemical use by up to 90%”相反。故选C。

4.4. What does the writer think of AI drones?

A They are useless.

B They are helpful.

C They are popular.

D They are expensive.

解析：选B。B 观点态度题。最后一段中作者说AI drones能“work quickly and help farmers protect nature”，并称这是“a smart and green way to farm”，说明作者认为AI无人机是有帮助的，因此B项“They are helpful”正确。A“它们没用”与作者态度相反；C“它们很受欢迎”文中没有依据；D“它们很昂贵”文中说的是传统大型机器“cost a lot”，并非评价AI无人机昂贵。故选B。

5.5. Why does the writer write the passage?

A To sell farm chemicals.

B To stop all farming.

C To study weather change.

D To show a new farm tool.

解析：选D。D 主旨大意题。全文先指出杂草和农药使用问题，再介绍Precision AI公司使用AI无人机识别并只喷洒杂草，从而减少化学品使用、保护自然，最后总结这是一种智能环保的耕作方式，因此作者写作目的是展示一种新的农业工具，D项“To show a new farm tool”正确。A“推销农药”与文章减少农药的主旨相反；B“停止所有农业”无依据；C“研究天气变化”只是开头背景，不是写作目的。故选D。