Proper storage of grains is very important. Preventive and control measures must be used before grains are stored for future use. How can we judge the good quality of grains as consumers?

Explanation

To judge the good quality of grains as consumers, we can follow these steps:

### Step 1: Visual Inspection
- **Check for Color and Appearance**: Good quality grains should have a uniform color and appearance. Look for grains that are free from discoloration, spots, or any foreign materials.

### Step 2: Smell Test
- **Assess the Aroma**: Fresh grains should have a natural, pleasant smell. If the grains have a musty or sour odor, it may indicate spoilage or the presence of mold.

...