ONE.True or False Questions (2 points per grid)

【　】1. My mother went to the vegetable market to buy fresh sweet potato leaves and cabbage, and after returning home, she told Xiaohua that the main parts of these two vegetables we eat are the "stems" of plants.

Correct answer: X (The main parts of sweet potato leaves and cabbage are "leaves".)

【　】2. In order to make juice smoothies, Xiao Ming put an ice box filled with water into the freezer. The water turns into solid ice cubes due to the decrease in temperature, a process scientifically called "solidification".

Correct answer: O

【　】3. Dad planted cabbage on the balcony, and he found that the cabbage seedlings placed on the edge of the balcony would bend and grow in the direction of sunlight, which is a natural phenomenon produced by plants to get sunlight.

Correct answer: O

【　】4. After all substances in the world change shape when heated, they can be completely restored to their original appearance as long as they are put in the refrigerator to cool.

Correct answer: X (Not all substances can be restored, such as roasted meat and burnt paper cannot be restored after they have changed.)

【　】5. In order to make the vegetables grow faster, she should water the seedlings abundantly and vigorously every day when the sun comes out at noon.

Correct answer: X (Watering at high temperatures at noon can easily injure plants, and watering too hard will wash away the seedlings.)

【　】6. When the whole family eats hot pot together in winter, we see that the water in the pot is boiling less and less, because the liquid soup is heated and "evaporates", turning into gaseous water vapor and running into the air.

Correct answer: O

【　】7. Xiaohua wanted to plant cherry radishes during the hot summer vacation, but he checked information on the Internet and found that "cherry radishes are not heat-tolerant", so he should follow the advice of scientific data and plant other vegetables suitable for summer growth.

Correct answer: O

【　】8. In the summer, after taking out a can of cold aluminum can of soda from the refrigerator and placing it on the table for a while, many small water droplets will appear on the outside of the bottle. This is because the aluminum can has a few small holes, and the soda inside flows out secretly.

Correct answer: X (It is because the gaseous "water vapor" in the air meets the cold aluminum can and "condenses" into small water droplets in a liquid state.)

【　】9. Rocks in nature slowly change shape due to wind, sun, and rain, and this change is as fast as "ice melts under the sun".

Correct answer: X (The rock changes shape very slowly and takes a long time. )

【　】10. When the cold snap comes, we rub our hands vigorously, stand in a sunny place to bask in the sun, or turn on the electric heater, all of which can generate heat and make our bodies feel warm.