试题：
Plants are very important living things. Life could not go on if there were no plants. This is 1 plants can make food from air, water and sunlight. Animals and men 2 make food from air, water and sunlight. Animals get their food by eating plants and animals 3 Therefore(因此), animals and men need plants in order to 4 This is the reason(原因) why we find that there are so many plants around us. If you look carefully at the plants around you 5 find that there are many kinds of plants. Some plants are large 6 others are small. Most plants are green.. Some plants have many small leaves. Others have only 7 large leaves. There are many kinds of leaves. Leaves are of 8 shapes(形状) and colors. Leaves are also different in other ways. Some leaves have short leaf stalks(叶茎)while others have long leaf stalks. Still others have 9 stalks at all. The edges(边)of leaves are also different. Some leaves have smooth(光滑的)edges. Some have wave(波状的) edges 10 the teeth of saw(锯).
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答案：
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