题目内容：

    In the near future, IoT (Internet of Things) will drive huge innovation (革新) in the way our food is grown. Plants will have a “voice”, not a human voice, but a voice based on data that can tell people, computers, and machines when, for example, they are thirsty, or need more sun, medicine, etc.

Take vertical (垂直的) farms, for example. Farming is moving indoors where the growth of plants can be monitored and controlled. The facilities are built vertically, so growing areas can be put in piles. This greatly reduces the amount of land needed for farming.

From an IoT point of view, vertical farms are connected in two ways. First, small sensors (传感器) in the soil or connected to plants tell a control system exactly how much light, water, and nutrients are needed to grow the healthiest crops. Sensors will also tell vertical farmers when crops are nearing their peak for harvesting at just the right time to make sure it’s still fresh when it reaches its final destination.

Second, vertical farms will be connected to other networks and information systems, including databases that track local demand. For example, local restaurants may input when they need fresh food supplies. And vertical farmers could get that information so they know which crops to grow in what quantities. This type of IoT system would have been unimaginable a generation ago.

Today, vertical farms are being experimented. Yet, the numbers point to a bright future for the industry, especially as the world’s population continues to grow. For example, Green Sense Farms in Chicago is able to harvest crops 26 times a year using 85 percent less energy, one-tenth the water, and no pesticides. A side benefit of lower energy use is lower CO2 output of two tons per month, with the added benefit of creating 46 pounds of oxygen every day.

1.What is the main idea of the text?

A.Voice machines help plants speak up.

B.Farmers are all turning to vertical farming.

C.IoT has brought great innovation to our future life.

D.Vertical farms driven by IoT are a future for agriculture.

2.How do sensors attached to plants work?

A.By recording farmers harvesting crops.

B.By monitoring farmers working their fields.

C.By analyzing information to preserve crops.

D.By passing information on to a control system.

3.According to Paragraph 4, the IoT system can help ________.

A.expand the output of crops B.match supply with demand

C.determine the needs of farmers D.move restaurants onto farms

4.What is the author’s attitude towards the future of vertical farming?

A.Negative. B.Indifferent. C.Optimistic. D.Doubtful.