Before going outside in the morning, many of us check a window thermometer(温度计)for the temperature. This helps us decide what to wear.__71__. We want our food to be a certain coldness in the refrigerator. We want it a certain hotness in the oven. If we don’t feel well, we use a thermometer to see if we have a fever. We keep our rooms a certain warmth in the winter and a certain coolness in the summer.