The human population on Earth grows larger each year. As a result, ___(1)___. Because of climate change（气候变化）, growing more food is becoming even more difficult.

When farmers tried to grow more food in the past, they would use farming methods that weren’t always healthy for the environment. To solve this problem, ___(2)__. They spent several years talking to farmers. They wanted to see what problems farmers were having and how these problems could be solved. __(3)___. These special robots move around on farms and collect information about crops（庄稼）. They can take pictures of plants, track（追踪）each plant’s growth and measure（测量）its size.

In the past, though farmers did have information about the weather and the earth, they couldn’t track each plant. __(4)__.

By collecting information about plants, the robots can help farmers make predictions（预测）about how their plants will grow. __(5)__. For example, if the robots find out which plants get sick, farmers can quickly throw them away before they are about to influence nearby plants. With the help of these robots, farmers can take better care of the plants in need.

A．	But now, with these robots, they can
B．	This led to the creation of special robots
C．	some scientists carried out a research project
D．	more and more food needs to be grown in order to feed everyone
E．	By studying each plant, the robots can also help farmers grow plants well