一、用所给单词的适当形式填空
1. The stem (carry) water to the leaves.
2. Different plants have different (part).
3. It's interesting (study) plants.
4. This plant (look) very special.
5. (be) there any flowers on the plant?
6. There (be) much water in the soil.
7. Plants help (keep) the air clean.
8. The leaves (turn) green in spring.
9. It takes time for seeds (become) plants.
10. Some plants (not need) much sunlight.

1. carries 2. parts 3. to study 4. looks
5. Are 6. is 7. (to) keep 8. turn
9. to become 10. don't need

二、从方框中选择合适的词块并用其正确形式填空
send up water, mix water and $\ce{CO_{2}}$, take a rest, oxygen, collect sunlight and $\ce{CO_{2}}$
1. Workers in the Leaf during the day.
2. Workers from the Root water to the Leaf through the Stem.
3. Last week, the science teacher water and $\ce{CO_{2}}$ in the experiment.
4. The plant will , but it doesn't need much of it.
5. At night, most plants from making food.

1. collect sunlight and $\ce{CO_{2}}$ 2. send up
3. mixed water and $\ce{CO_{2}}$ 4. produce oxygen
5. take a rest

三、从短文后的选项中选出可以填入空白处的最佳选项
Have you ever wondered what happens within a plant? It's a wonderful process that keeps plants growing and helps our planet stay lively. Each part of a plant works together like a team, and none of them can work alone.
The root is like the plant's "water collector". It grows under the soil and
1 water and minerals from the ground. Then it 2 the water to the stem. The stem is strong and straight, and it 3 the water and nutrients to the leaves. It also supports the plant and keeps it standing tall.
The leaves are the plant's "food factories". During the day, they 4 sunlight and carbon dioxide. With the help of water, they 5 these things to make sugar. This process is very important for the plant's 6.
Oxygen is a by-product of this process. It is released into the air, and it is 7 for all living things to breathe. When night comes, the leaves stop working and 8. Plants are more amazing than we think. They give us more than just food—they give us the air we breathe and make our planet green. We should never 9 how important plants are. Let's do our best to keep them 10 and healthy.
()1. A. sends B. collects
C. wastes
()2. A. sends up B. takes down
C. throws away
()3. A. breaks B. holds
C. carries
()4. A. avoid B. collect
C. refuse
()5. A. mix B. separate
C. divide
()6. A. death B. growth
C. illness
()7. A. unnecessary B. unimportant
C. important
()8. A. rest B. work
C. fight
()9. A. value B. forget
C. protect
()10. A. weak B. strong
C. dead

1—5 BACBA 6—10 BCABB